Once you unlock all the trophies in this game, you'll have this awesome platinum added to your collection.

Easy one, you don't even have to win! Just play until the match is over and the trophy is yours

Another easy trophy. The first time you kill online, this trophy pops.

A certain points during selected matches (namely "Survival of the Fittest" and "Civil War"), an announcement will appear about the appearance of a Big Daddy suit in the map. It's very recognisable as it will be in a "shiny/glowing gold" colour, much like any interactive object in BioShock. Though random, they usually appear in 'big areas' in the map. Once you find one, run for it and wear it. Then the trophy will pop.

When someone becomes a Big Daddy, kill him and claim this trophy. This MAY be boostable. It is somewhat difficult, so make sure his health is low from other attackers before you kill him as his weapons would be powerful. (Thanks to F8L Fool for the tip)

Trial are certain sub-objectives/challenges that you do in multiplayer match, they will grant you ADAM as a reward. Complete one of them and this trophy is yours. You'll probably complete a random Trial without even working for it, but if you're curious, achievable Trials can be viewed in 'Statistics' in te MP menu. Here is an extensive list of various Trials if you're interested.

In "Capture the Sister" game, when it's your team's turn to capture the Little Sister, find her, pick her up and put her in a Vent. The trophy will, then, pop.

It has been noted that this trophy is glitched. Apparently, it may take a few attempts to get it. Make sure you do it early.

Also, it's good to have a partner on your side to help out. This a frustrating trophy and you might need help with it (a few times, even!).

See "Choose the Impossible."

See "Choose the Impossible."

See "Choose the Impossible."

This is the highest rank in multiplayer. Naturally, as you level up, the gap between ranks become wider. The score used for this is ADAM. ADAM can be obtained through various means. However, this will take some grinding. This may be achieved in 15-30 hours of game play. Here are the ranks and scores:

• Rank 10: 9000 ADAM.
• Rank 20: 25500 ADAM.
• Rank 30: 53000 ADAM.
• Rank 40: 97000 ADAM.

On average, you'll earn 300-600 per match (in "Survival of the Fittest"), 3000-5000 ADAM per hour. Here are some tips:

1. Research everyone.
2. Hack every machine.
3. Aim for killstreaks.
4. Collect ADAM Vials (red liquid bottles)
5. Be a Big Daddy.
6. KILL a Big Daddy.

Realise that, you get the same amount of ADAM per kill as you get for researching a killed player (10 ADAM). The thing is that the number of kills defines your place (1st, 2nd. etc) at the end of the match, and you'll be awarded a certain amount of ADAM depending on that (200 for 1st place, the rest is defined by the total number of players).

The best way to rank up is in "Capture the Sister" game, as there is no limit on the number of kills, hacks respawn for each round and you do get a chance to play as Big Daddy which should add to killstreaks. (Thanks for Pvt Rain for the tip!)

Achieve the highest score in any non-private multiplayer match, and this easy silver trophy will pop.

Another way to get this is just play any team-based game mode, and be on the winning team. (thanks to theaface for the tip!)

You will get this if you aim for the "Choose the Impossible" trophy. In total, there are ten maps in BioShock 2 multiplayer, mostly (heavily modified) levels from BioShock 1. They are:

1. Arcadia,
2. Farmer's Market,
3. Fort Frolic,
4. Hephaestus,
5. Home for the Poor,
6. Kashmir Restaurant,
7. Medical Pavilion,
8. Mercury Suites,
9. Neptune's Bounty
10. and, finally, Point Prometheus.

You actually have to play a full match in each map (or play to the end, at least, if you're a 'late-comer' in the game) to get this trophy.

See "Max Plasmid Slots."

There are up to eight plasmid slots. When you start the game, you'll have three slots. You purchase four more from the Gatherer's Garden. The last one you will unlock by the end of the game (the last slot can't be missed, don't worry about it).

See "All Weapon Upgrades."

See "All Weapon Upgrades."

'Power to the People' machines are the stations you upgrade from. Each one allocates one upgrade only. There are 14 PTTP for 14 upgrades; 2 in Ryan Amusements, 3 in Pauper's Drop, 2 in Siren Alley, 2 in Dionysus Park, 2 in Fontaine Futuristics, 1 in Inner Persephone, 2 in Persephone Outer.

Also, you should note that this is a misnomer, there are 18 possible upgrades, but only 14 PTTP stations. Just find the stations and this trophy is yours.

Click here for a more detailed guide.

Again, another easy one. There are eight different machines: First Aid stations, Circus of Value, El Ammo Bandito, Security Cameras, Turrets, Security Bots, Safes and Door Locks. Hack each one at least once and you'll get this trophy.

One of the new features in the game is distant hacking. There is a gun-like tool called 'Hack Tool.' When you fire it at a machine of any kind, you'll be able to hack it from a distance. Do it for 30 machines and the trophy is yours.

An easy way to do this would be to stand under an unhacked Security camera, wait for the bots to come then hack them with the Hack Tool, rinse and repeat until you get the trophy (though it is easy to get the trophy without doing that anyway).

See “Research Master.”

See “Research Master.”

When you get the Camera in Pauper's Drop, you will ‘research’ your subjects by filming them, attacking them and killing them. Each KIND of villain (Leadhead Splicer, Brute Splicer.. etc) gets a separate category. The better the research (more action during filming), the higher the score and the faster the track fills. For each villain there are four ‘levels' of Research (can be tracked in the main menu (press ). Each villain get has own 'Track.') Fill them out to the max for each villain. Also, use your camera the minute you get it, as some villains may not appear in later levels. Though not necessary, you may want to equip any Research-specific Tonic you may find, as it will facilitate your research. Here is a list of villains (as they appear in the Research menu):

• Thuggish Splicer: These are the Splicers who attack you with melee weapons. Incidentally, these are the rarest Splicers. Once you get the camera, research the hell out of them as they will no longer appear in later levels.
• Leadhead Splicer: These are the 'generic' Splicers. They carry guns and sometimes throw bombs. There is enough of them to go around though, and will appear all throughout the game.
• Houdini Splicer: These are the Splicers that 'teleport' from a point to another as they attack you. They will hurl fireballs at you as their weapon. They appear first in Dionysis Park and will remain throughout the game.
• Spider Splicers: These are the Splicers that crawl on ceilings. They throw hooks at you as their weapon. They will remain appearing up until, and including, Dionysus Park.
• Big Daddy: These are the big, fat villains that protect the Little Sisters. They first appear in Ryan Amusements and remain until and including Fontaine Futuristics. In this game, however, there is NO distinctions between the Big Daddies (Rosie, Rumbler... etc) when it comes to Research.
• Big Sister: The infamous new villain of the game. Every three times you 'deal' with a Little Sister, they will appear. Also, there will be two more in the penultimate level. How you'll want to do this is deal with every Little Sister you find. Fight every Big Sister, hit them a few times then start filming. You need to film and then hit them till they die. Otherwise, if you film from the very beginning, you might not be able to kill them 'in time,' and this get a low score. There aren't that many Big Sisters so take advantage of every encounter you make with them.
• Security: 'Security' here constitutes Security Cameras, Security Bots and Turrets (no distinctions). The easiest way to get this research is to stand in front of an unhacked Security Camera, trigger the Bots to come, film and attack. Rinse and repeat until their research bar is full.
• Brute Splicer: These are the 'fat' Splicers. They appear around the beginning of the game, and usually attack you with melee or hurl objects at you. They appear for a few levels after you get the camera. There will be a lot of them in the last two levels, too, so plenty of opportunity to research them.
• Alpha Series: These are a 'skinnier' version of Big Daddy, but still powerful, they will use their various weapons against you, and sometimes attack you physically. They first appear in Fontaine Futuristics and continue to appear for the remainder of the game.

If you’re playing this on easy (as I recommended) this one will be REALLY easy to get. Also, if you’re not using Vita-Chambers, you’ll get this after killing your third Big Daddy. If you’re going to ‘deal’ with every little sister, this trophy is virtually unmissable.

There are various ways to get ADAM. However, this particular trophy requires 600 ADAM that you remove from bodies with the help of Little Sisters. It does not matter how much ADAM you have; for this trophy, 600 ADAM should be total amount of ADAM removed from dead corpses by the Little Sisters. If you're aiming for the 'Dealt with Every Little Sister,' make sure you let the Little Sisters perform 2 Gathers each. You'll get this just before the last roaming Little Sister in the game so the opportunity window is very limited.

Whenever you get a new Plasmid, either purchasing or getting them from Eleanor, you'll be able to purchase 'upgraded' versions of these Plasmids at the Gatherer's Gardens. Trophy-wise, you only have to fully upgrade ONE Plasmid only.

You’ll get the Plasmids either from ones you find left behind by Eleanor, or the ones you buy from the Gatherer’s Garden, more will appear at the GG as you progress. The Plasmids are (in no particular order (except the last one)): Incinerate, Telekinesis, Hypnotize, Security Command, Decoy, Electro Bolt, Insect Swarm, Winter Blast, Cyclone Trap, Scout and, finally, an unmissable, story-based one you get towards the end.

This may take a while and require some farming. Once you hack any Security machine (Turrets, Security Cameras and Security Bots) they will be friendly to you and attack Splicers. Make sure you hack each one you find to make this trophy easier. Also, in addition, the best place to farm this is in the Imago Fine Arts Room in Dionysus Park. There are tons of Security there that you can hack. Also, if you perform a Gather there, more Splicers will come.

However, another, easier way to get this is to use Security Command (lvl. 2 or 3) Plasmid, hold L2 and hurl it at various Splicers. A Security Bot will be summoned automatically and will come and try to kill them.

Don't rely on one method; do both to make sure you get enough Security kills before the end of the game.

This one is extremely easy to get. There are various forms of 'Trap.' One of the first weapons you get is a Rivet gun. One of the special bullets is a Trap Rivet that you can use. You don’t have to fire them onto the floor and wait for a Splicer to pass. You can just fire a few at the Splicers themselves and they’ll die in a few seconds. Kill 30 enemies using this method and the trophy is yours.

Other types of Trap include Proximity Bombs and the Cyclone Trap Plasmid.

This one is a tricky one. A ‘Gather’ is when you use an adopted Little Sister to gather ADAM. When you adopt her, she’ll be on your shoulder. Press and hold to let her lead you to a corpse with ADAM. Once you find one, from the minute you put her on the floor to let her gather ADAM until she is done and you pick her up is a ‘Gather.’ However, the second a Gather starts, a bunch of Splicers will appear. Now, to get this trophy make sure you’re at a vantage point, with hacked Security Machine near you. Also, I recommend using the Decoy Plasmid to distract Splicers as the Little Sister gathers the ADAM, in addition set up any traps you can (Trap Rivets, or Proximity Bombs and Mini-Turrets if you have them). Once done, immediately pick her up again and the trophy is yours.

Make sure you save before you perform a Gather. In case you get hit, just reload the save. This may take a few attempts.

Here is a video showing how it's done:

If you’re playing this on Easy, you’ll run into a LOT of money. You’ll be able to get this trophy way before the end of the game. Otherwise, good luck! But if you’re playing on hard, you’ll probably buy lots of supplies from the Circus of Value or El Ammo Bandito so you’ll probably get this trophy, too.

‘Dealing’ here constitutes either rescuing or harvesting little sisters. I HIGHLY recommend that you first adopt, let them gather ADAM then rescue them. To know how many sisters are in a given level, press . At the bottom of the menu are a few icons of Little Sisters with Big Daddies. Upon rescuing them, the icon turns into a face of a little girl.

There are 1-3 Little Sisters in each level starting from Ryan Amusements and up to, and including, Fontaine Futuristics.

Pretty straight forward. Hard is slightly harder than normal but A LOT easier than BioShock 1’s Survivor mode. It can be frustrating at times, though. Just enable Vita-Chamber, be stingy with your supplies, finish the game as quick as possible (assuming you've got all the other offline trophies) and voila, you're set.

To make it even easier, there is a 'glitch' for infinite health. In the Siren Alley level, you can find the "Scout" Plasmid. Just equip the Scout plasmid, use it at a Gene Bank and IMMEDIATLY press X. Then replace Scout for any other Plasmid and back out. If a 'ghost' image appears just before you make the switch, it means it worked. Thanks to findaway (How proper!) for the tip, and credit goes to BigBSt4TZ from YouTube for discovering the glitch.

Vita-Chambers are ‘checkpoints’ you respawn from every time you die. When you first start the game, press ‘start,’ and under ‘Options’ disable the Vita-Chambers. Rely, instead, on multiple saves.

It doesn't matter what difficulty you disable Vita-Chambers in; it only matters that you play a playthrough without using them.

If you have forgotten to turn them off, don't worry, so long as you have not used them (as in, respawned from them), then you're fine. (This has been confirmed by The Pirate, credit goes to him for this tip!)

This might not be as missable as it may seem. There are more than 100 audio diaries scattered throughout. Just keep a look out for them and you’ll most likely find them on your own. However, if you’re concerned, here is a list of 100+ Audio Diaries and their locations.

This is not as straight-forward as it may seem. For starters, the problem is not playing on the new maps as much as it is actually finding a match on one of the new maps. There is no DLC-based matchmaking or search of MP games, and in order to enter a match in one of the new maps, everyone in the Lobby has to have the new DLC installed. If even one person in the Lobby doesn't have the new DLC, you're bound to play in the older maps. And even with everyone having the new DLC, the new maps are not on a separate list; they are "shuffled" into the original (random) maps rotation so, even then, a bit of luck is involved in playing the new maps.

Further, to unlock this trophy you have to have played from the beginning to the end of the match on each new map. If you're not boosting, you can marginally increase your odds in finding new maps by playing "Kill 'em Kindly" or a small multiplayer game like "ADAM Grab." If you enter a new map, it means everyone in the game has the DLC, so I suggest you stick with them as then you'll get to play in most of the new DLC maps. Don't forget to keep track of what maps you've played.

With that said, there are a total of six maps:

- Dionysus Park

- Fighting McDonagh's

- Fontaine Fisheries

- Pauper's Drop

- Siren Alley

- Smuggler's Hideout

To add insult to injury, not only are you going to slave away searching for a game on a new map (assuming you're not boosting), but you actually have to win in 1st place on each map, regardless of what gamemode it is. What's worse, this trophy is glitched so you may have to win a few more times to unlock it.

Assuming you keep a checklist, and are not boosting, in order to increase the odd you must a) NOT play in any team-based match and b) come first on every map without even a tie (i.e. by a margin from the 2nd spot). Though the win will be registered if there is a tie or your team wins, the trophy is only awarded to one person per match, which is why I suggest, after you've won on all maps but not gotten the trophy, to try and win in a non-team-based match.

If you are boosting (assuming you're doing the "ADAM Grab" boost), just proceed as is, with everyone tying in 1st place (i.e. don't touch the Little Sister). Once everyone "wins" on each map, the trophy will be awarded only to 1-2 people, mostly the host. But don't worry, your "wins" are still registered. Now, you need to actually unlock the trophy itself.

If you end up in an old map afterwards, continue boosting as usual. However, if you end up on a new map, whoever wants the trophy first (you should agree on whom) should grab the Little Sister first and hold her for the entire duration (i.e. the whole three minutes). That person will win and, if he was in 1st place on all the new maps already via boosting, he/she will be awarded with the trophy this time. Keep doing that until everyone in your boosting team gets the trophy and then you can go back to boosting as usual on both old and new maps.

Pretty straight-forward, actually. "Rebirth" is the BioShock 2 equivalent of Prestige mode, where you have to reset your rank start anew from Rank 1 once you reach the highest rank. The only problem is just reaching the new level cap - Rank 50. If you've already reached that via the Sinclair Solutions Tester Pack (the first DLC), then go to the main menu of multiplayer, and choose "Rebirth."

If you're at Rank 40, you'll need 66,000 ADAM points to reach Rank 50. Between each Rank from 40 to 49, 6000 ADAM points are needed per rank, and from 49 to 50 - 12,000 ADAM points. Thus, the minimal total ADAM that you'll have will be 163,000 ADAM points.

However, any ADAM point you get after you reach Rank 40 (97,000) before buying either DLC will not count towards Ranks 41-50 and it be reset back to 97,000 upon levelling up from Rank 40, though your overall ADAM count will still be intact on the Leaderboard.

That said, once you reach Rank 50, Rebirth becomes an option in the multiplayer main menu. Once you choose it, the trophy will unlock.

Be warned that if you choose to Rebirth, your TOTAL ADAM count will be reset (along with your Trials, weapons, Plasmids and Tonics) back to zero including your rank/place on the overall leaderboard!

If you're in this for the trophy only, then by all means, but make sure you take a conscious decision. And no, other stats will not reset (i.e. Kills, K/D ratio) so keep that in mind. Also, I suggest you do NOT rebirth until you get the Territorial trophy, because otherwise it'd be difficult as you'd lose all your weapons/Plasmids/Tonics.

If you do choose to Rebirth (hopefully after you got the Territorial trophy), go ahead and pray to God that there will not be any future DLC that will require reaching a high rank again!