You can accomplish this while playing Mission#1. At some point, you will receive a secondary objective to collect prisoners and bring them to the church. There are far more than 20 prisoners, so pick any that are closest/convenient.

This is hard to do at the same time as the primary objective. I strongly advise you to concentrate on the secondary objective for this trophy. You will need to work a few primary objectives or you won't have enough time. You should switch between them: rescue a few sets of prisoners, kill a few enemies, rescue more prisoners, etc. Bring up the mini-map by pressing and you will see gray dots showing the locations.

You will get this naturally as you play thru mission#1. Bryant will drop a helicopter in a crate, shoot the crate and drive over it to pilot the chopper and you will get this trophy.

You can accomplish this while playing Mission#2. At some point, you will receive a secondary objective to kill the staff sergeants.

This one is easy to do at the same time as the primary objective! Bring up the mini-map by pressing and you will see gray dots showing the locations of the staff sergeants. Drive over to them and kill them before you destroy the nearby primary objectives.

You can accomplish this while playing Mission#3. At some point, you will receive a secondary objective to collect relics.

This is hard to do at the same time as the primary objective. I strongly advise you to concentrate on the secondary objective for this run. You might need to work a few primary objectives if you won't have enough time to complete the secondary objective otherwise. You should switch between them: collect a few relics, kill a few enemies, collect some more relics, etc. Bring up the mini-map by pressing and you will see gray dots showing the locations.

You can accomplish this while playing Mission#4. At some point, you will receive a secondary objective to steal weapon crates and arm the villagers.

This is hard to do at the same time as the primary objective. I strongly advise you to concentrate on the secondary objective for this run. You might need to work a few primary objectives if you won't have enough time to complete the secondary objective otherwise. You should switch between them: collect some weapons and drop it off at the village, kill a few enemies, collect some weapons, etc. Bring up the mini-map by pressing and you will see gray dots showing the locations.

You can accomplish this while playing Mission#6. At some point, you will receive a secondary objective to destroy the mining carts.

This one is easy to do at the same time as the primary objective! Bring up the mini-map by pressing and you will see gray dots showing the locations of the mining carts. Drive over and destroy them, while completing the primary objectives nearby.

You can accomplish this while playing Mission#8. At some point, you will receive a secondary objective to steal the Document Briefs.

This one is easy to do at the same time as the primary objective! Bring up the mini-map by pressing and you will see gray dots showing the locations of the Briefs. Drive over and collect them, while completing the primary objectives nearby. There are quite a lot of Document Briefs, but you should have no trouble collecting them all.

Finish the ninth mission in Single Player to complete the game and unlock this trophy. If you prefer, you can do this on easy difficulty, and completely avoid many enemies.

Glitched: Unlocked this trophy by completing most of the game on Hard, and then completing Mission 9 on Casual. (Thanks to nastich88 for the glitch information.)

This is going to be a real pain in the butt. You will likely have to improve your skill a lot to get this trophy. There are many enemies that can be avoided altogether, and you should focus on just completing the primary missions.

Choose your character carefully. There are four characters to choose from (they will be releasing more as DLC). Roxy can call in an air strike, which means after a bit of a delay there will be a nice area damage effect. Diz has an EMP, which means you can temporarily disable all weapons in the immediate area. Armand has a shield that can bounce enemies bullets back at them. Gunnar has a Heavy Cannon with armor penetrating rounds, however the trade-off is that you can't move while this cannon is active. The delay in Roxy's air stike, and the immobility for Gunnar's Heavy Cannon make them unsuitable for when you're in a tight bind...

Choose your upgrades carefully, and use them efficiently. I have been playing as Diz, and use these upgrades: Hardened Hull, Auto-Reload secondary weapons, secondary weapons Magazine Size Elite and Static Shock. With these upgrades: you have more health, and you recover more health when picking up a health pack. These two secondary weapon upgrades allow you to store up to six rockets and it auto-replenishes the ammo too! Static Shock allows you to get out of a tough bind in style.

In some cases, you can drive the proper distance so that the enemy is on the edge of the screen, and shoot them without them shooting back. This works for only a select few enemies, but worth mentioning.

WARNING: As the trophy specifies, this must be done in single player. If you hit level 45 online or in local co-op, you will have to delete the save file or start another character for this trophy.

Not possible while playing on Easy. You will only gain experience points, and rank, by playing missions on Medium/Hard difficulties. You will likely get this just from doing all the missions on Hard and completing secondary objectives on Medium/Hard. If you managed to do all that and still aren't at level 45, just grind out some more points by replaying missions.

This trophy will pop when you get to level 45. (While you can increase the bar to maximum again after that, you won't progress to level 46.) You will now have just enough points to unlock any remaining upgrades. (If you purchase upgrades when playing online, you may lose those points and not be able to choose all the upgrades. This bug does not affect any trophies.)

You will not get any streaks while playing on Easy. You must be playing on Medium/Hard.

Glitched: Some people got this without a 50x damage streak. This trophy popped for me directly after I got The Daily Grind trophy for hitting level 45. I didn't have much of a kill streak going, perhaps it was a three kill streak... Not sure what the specifics are to reproduce the glitch, but for the record I was playing Single Player on Medium with patch 1.01 in place. Many other people have also reported they are getting this trophy directly after level 45, so chances are you will too (if they patch it, you can just play without the patch for this trophy).

To unlock this trophy the proper way: you should be shooting multiple enemies without much of a gap to increase the streak counter, and keep the continuous-damage bar from dissipating. You can see the counter streak bar and number in the bottom right corner of the screen. There aren't enough enemies in the earlier stages, so you will have to wait till the later missions to even try for this.

When you complete a mission, you will see the final screen showing your "skill level" in the upper left. The rating ranges from "Poor" to "Alien", and you will need the best rating of Alien to unlock this trophy. While it isn't clear exactly what factors into this rating, one can presume it has to with hard difficulty, fast game time, amazing accuracy, kill streaks and minimal damage taken. Score/Points is definitely NOT related to this.

Tips by Yoszek:

  I thought it will be ultra hard but it was surprisingly easy.

I played Mission 6 (The Cauldron) on Hardcore Difficulty with the Diz character. Upgrades were: Defense:Hardened Hull, Tactics: Static Shock-Elite & Efficiency-Elite & Super Charged.

Just kept pushing forward and using EMP every time there was some tanks or rocket vehicles. Got a 54 kill streak in there too. I lost my streak after 54, but still got a few more streaks over 20.

I did it without losing a single life. If you watch out for rockets you will be able to survive it easly.

Also got Alien rank on Missions 8 and 9, so I'm sure that with some practice it can be achieved in all missions without a problem.

Also funny thing happened to me at the last boss fight. We doubled KO each other and the game completed for me. I got the trophy Tough Stuff and Alien rank but on scoreboard it was GAME OVER and 0 score.

Tips by jonfelkin:

I agree it was shockingly easy. I did it with Diz in Hardcore on Mission 3, as I was progressing in the story, and I also collected all the relics. I was just trying to get maximum damage while taking minimal damage (like the in-game hint suggests). I don't think the kill streak affects it, just how much damage you do and take, so score is probably not a deciding factor.

Lost one life, almost two, and no kill streak over 25 ~ but still got Alien rank on it!

Also did Mission 2 with Superhuman rank trying the same tactic (go for damage whilst taking the minimum possible). Didn't loose a life there but don't think I killed enough for Alien

Now this one is a pretty easy trophy to acquire if you correctly follow the steps that I'll list below. Near the middle of mission 1, there will be a part where you have to rescue the civilians from their frosty cages. They are probably hidden in static so they're hidden in questionable blue looking closets. When you start rescuing the civilians and you hit the 6 civilians rescued mark, you will be prompted that a golem has appeared in the nearby village and you have to stop it. The first thing you have to do is completely ignore the golem and continue collecting the civilians until a timer appears.

What'll happen when you do this is, the timer will reset and disappear when you kill the golem as the timer and red objective marker has prompted. So after that, continue collecting the prisoners. You will be prompted to defeat atleast 3 golems before the mission ends so it won't be a problem if you abuse the button all the time and switch between parts of the map to return and collect. There are 24 civilians in total. Also remember that the three other civilians only appear when you've defeated each of the golems so don't panic when you're at the last golem with only 23 civilians!

Now this is another fairly easy trophy to acquire. All you have to do is follow the grey mission objective marker as with number one. The only problem with this trophy is that you run at risk of being mislead by the red objective marker. I suggest what you should do is, whenever the next objective appears, backtrack a little and see if the objective arrow changes. If it doesn't you're on the right track. It's also a fairly easy level as there are no golems around to annoy you, so just continue on the level normally while picking up the intel.

Now this is one of the trophies that I think even on hardcore has a bit of a challenge. I had a hard time trying to defeat this thing until I found out that it's going to be really easy with the flamethrower. This trophy is also a very hilarious reference to what Bryant called the panzer wyrm. There are a few phases before you can deal damage to this baby and they go by in this particular order:

• The wyrm circles around the small forest map (be careful of the terrain) and tries to get you inside its motors. Make sure that you're out of it's way and have at least 10 feet in distance away because its movements are spastic.
• Second attack is after it burrows into the snow. It reveals itself later again after a few seconds to resurface and launch missiles at you. At the same moment, it reveals its weakpoints at you so shoot the weakpoints! The missiles are really harmless as they are probably dumb rockets (opposed to the smart missiles you get). It's easy to just move a bit and keep on firing, it has two ports so be careful.
• Last thing that it does is, it goes back into the snow and then releases 10 probes/aircrafts similar to what the golem release. Depending on your character and strategy, you can ignore this (but i'm sure you can't) or kill it (with more firepower). It'll be a hard thing to juggle at the same time as after it releases the pods, it'll revert back to step 1.

Depending on your character and playstyle, there are quite a lot of elaborate ways in dealing with this guy. Here are a few ways with the characters names listed in the front.

Diz is the most useful when the wyrm goes up to the surface to bombard you with missiles. If you have a nasty damage dealing secondary weapon and want to finish the level without any damage, Diz is the character for you. Use the emp when the wyrm surfaces and continuously stream the flamethrower at the wyrm. The DPS from the flamethrower is the deadliest thing about it, as the more exposure you have against the enemy, the more DPS it will deal. DPS is damage per second by the way, and can reach 100-3000 damage. Also useful for the inferno boss battle in the original game.

Roxy is especially useful against the wyrm's annoying summons. Yes, as we suspected, the wyrm has summons! What you have to do is, when you're rattling its health when it resurfaces, you can either use it while its on the surface or wait till it burrows back down to kill the lackies with Roxy's awesome airstrike. Repeating the process will be unnecessary as the second time around, the wyrm will probably be dead.

Gunnar is the most straightforward of the group. All you have to do is to aim at the wyrm with the front of the vehicle arranged to take up all the impact. The shield on gunnar's car (if upgraded) will absorb all the damage while you're holding the button and it deals more or less 1500 damage a shot. 3 shots a second and probably more than 20 shots will kill this baddy.

Last but not the least, Armand. - It's really adviseable to use Armand on the wyrm when you're at least level 30 so you can have four of the slots available. The perks you need to equip are reflective shell (to bounce back the rockets for 1.5k damage) and more time and less cool down for the shields. This is a pretty passive way of dealing with the wyrm and i'd expect you to do this last. Or if you want to have some fun, you can try and do this.