Get all other 49 disc-based trophies in order to unlock this trophy.

Story Related & Cannot Be Missed

This is the prologue chapter (will reference it as chapter 1 to make things easier), very short, nothing hard and no combat. Trophy unlocks at loading screen leading into next chapter.

Story Related & Cannot Be Missed

This trophy will come while playing though the 2nd chapter and will introduce you to the nanosuit and combat. If you get stuck always remember to hit on the d-pad to bring up visor mode to show you objectives and helpful strategy tips. This chapter has a chapter specific trophy, see below.

Story Related & Cannot Be Missed

Obtained in chapter 3.
 

Story Related & Cannot Be Missed

Obtained in chapter 5.
 

Story Related & Cannot Be Missed

Obtained in chapter 7. 

Story Related & Cannot Be Missed

Obtained in chapter 9 "Dark Heart." This chapter has a chapter specific trophy, see Hole in One.

Story Related & Cannot Be Missed

Obtained in chapter 10. This chapter has a chapter specific trophy, see Band of Brothers.

Story Related & Cannot Be Missed

Obtained in chapter 11.

Story Related & Cannot Be Missed

Obtained in chapter 12. This chapter also has a chapter specific trophy, see Literary Agent.

Story Related & Cannot Be Missed

Obtained in chapter 14.

Story Related & Cannot Be Missed

Obtained in chapter 15.

Story Related & Cannot Be Missed

Obtained in the chapter 17.

Story Related & Cannot Be Missed

Obtained at the very beginning of chapter 19.

Story Related & Cannot Be Missed

Obtained when the game is beaten on any difficulty setting.

Complete the entire single player campaign (19 missions) on Supersoldier difficulty. You can do this from chapter select. Beating levels on Supersoldier will also be counted as you beating them on Veteran difficulty and will give you the trophies related to beating levels on Veteran as well.

TIPS & TRICKS:
If Supersoldier is your second playthrough the first should have fully or almost fully leveled your nanosuit which will give you a huge edge in this difficulty. If you are still having trouble use these:
1) You can farm chapter 10 on easy to collect Nano Catalyst and fully level the Nanosuit.
2) Use stealth to avoid enemies (especially large groups) and just go for the objective.
3) In the levels where you are fighting the Heavy Cephs make use of explosive weapons and turrets.
4) Always stay near cover, don't try and be a Melee Commando like in easy mode
5) Recommended perk customization is: Stealth Enhance, Nano Recharge, Mobility Enhance

Very simple trophy that should come naturally, to enter Stealth you hit and go behind a soldier then when prompted, press down on to initiate a stealth kill. Every chapter that has soldiers can be used for this trophy, make sure you pay attention to your enemy's awareness bar (if it is yellow or not active will make it ideal for stealth kills) for maximum effectiveness.

Chapter 2 Specific Trophy

This trophy is only attainable in Chapter 2. Halfway through the chapter upon clearing an alley and using the armor ability you'll come to a clearing and to your left will be a giant donut. Approach the donut in stealth mode and wait for the CELL soldiers to finish their conversation and start to move. When one is below the donut hit the to initiate a sequence where Alcatraz pushes over the donut.

Chapter 9 Specific Trophy

In the mission Dark Heart in between the second and third Ceph Pillars, look down to the water and there will be a black vortex, jump down and shoot some Ceph so they follow you down there as well. Run up and grab one of them with and aim towards the sinkhole and press for Alcatraz to throw the Ceph down the sinkhole and netting you this trophy.

Here is a video outlining how to obtain the trophy: Credit to PowerPyx

Chapter 10 Specific Trophy

Near the beginning of this mission you will have to fend off waves of Ceph attacks and you'll keep all marines alive for the first wave in order to get this trophy (they all need to enter the weapon cache area). Some general tips are to make sure you're always grabbing the attention of the Cephs, shoot them, run around but keep near the Marines, keep the Ceph away from the marines and do not use Stealth. This trophy is best done on easy.

Here is a video outlining how to obtain the trophy: Credit to PowerPyx

Chapter 12 Specific Trophy

When running through the burning building in "Train to Catch" there will be a doorway that is surrounded by fire, activate armor mode and run through the fire and then press on the d-pad to bring up your visor and see a book on a shelf, run up to it and press (while still in visor mode) to get this trophy. Yes it is only 1 book despite the trophy description.

Video outlining how to obtain the trophy: Credit to PowerPyx

Chapter 16 Specific Trophy

Note that there is no story related trophy for chapter 16. The second you hit Prism Island from the aircraft carrier enter stealth mode and proceed to the building in the upper right corner of the map (follow your objective). Take precaution and hide behind walls to recover your energy and do not move until you have re-entered Stealth mode. When you enter the basement to hit the switch and restore the power and the trophy will pop if you were not detected. Make sure keep an eye on the enemy's awareness meter to ensure you are not at risk of being discovered, even if the awareness bar partially red you will not be detected, only if the bar is fully red will you be discovered. Take your time and the trophy is yours.

Credit to PowerPyx for the video

Self-explanatory, get the highest score. Do this in any game mode by getting kills, assists and going on defense and offense around objectives [capture them or defend them]. Considering you have to win on the game mode Instant Action (free for all) for the "Jack of All Trades" trophy you can get this trophy by winning that game mode. Thanks to user kb420mcl for this tip. Here is a video I made to help:

To unlock a weapon you must spend "weapon unlock" points on a weapon you meet the level (multiplayer rank) requirement to unlock. Weapons include 12 primary, 4 secondary and 4 explosive weapons. You will get the ability to unlock any weapon at level 29 and gain acquire all the weapon unlock points at level 45. You will get weapon unlocks at the following levels: 1, 3, 5, 7, 9, 13, 15, 17, 19, 21, 24, 27, 29, 31, 33, 37, 40, 43, 45

As of patch 1.04 this trophy will no longer glitch if you rank up and obtained a weapon unlock and leave the match before it ends if you start to play multiplayer after patch 1.04. There is still a chance for this to glitch if you played the MP before 1.04. To prevent this trophy glitching do not leave a game/be kicked (for being idle) after ranking up.

If this trophy does not unlock @ rank 45 make note of the weapons you are missing, reboot your nanosuit and level up to unlock the weapons you missed and unlock them and that will give you the trophy.

Skill kills can be found under Operative Status in the Multiplayer Menu (the video in the roadmap shows this around 5:20). There are a total of 23 skill kills, I have compiled a list of them and what needs to be done to obtain them:

Thanks to Yoda91192 for helping me complete the list!

First Strike - Get the first kill of the match
Blind Fury - Kill an enemy while you are stunned by a flashbang grenade (Can flashbang yourself)
Dead Air - Kill an enemy when they are in the air
Specter - Stealth kill an enemy
Headshot - Kill an enemy with a headshot
Triple Kill - Get 3 consecutive kills within a few seconds
Psycho - Get 5 consecutive kills within a few seconds
Vengeance - Kill the enemy who most recently killed you
Puncture - Kill an enemy by shooting through an object
Blinding - Kill an enemy that is stunned by a flashbang grenade
Combined Fire - Damage an enemy with your primary weapon then switch to pistol and kill them
Road Rage - Kick a car at an enemy (with ) and kill them
Denied - Kill an enemy when they are 1 Dog Tag away from acquiring a killstreak
Busted - Kill an enemy when they are in stealth mode
Defiant - Kill an enemy when you are near death
Smackdown - Melee kill an enemy
Double Kill - Get 2 consecutive kills within a few seconds
Relentless - Get 4 consecutive kills within a few seconds
Resurgence - Get a kill after a death streak (Unknown how many deaths, assuming 5?)
Wingman - Protect a team mate (Unsure how to do this, I think protect a team mate in an objective)
Guardian - Kill an enemy who is shooting a team mate before they kill that team mate
Flushed - Kill an enemy after they've been hit with a frag grenade
Intervention - Kill an enemy who is shooting a team mate in the back

As of patch 1.04 you only need play one round of each of the four core game modes (Not including DLC game modes) which are: Team Instant Action, Instant Action, Crash Site and Onslaught (You do not have to play the sub headings under each game mode, for example you only need to play standard and not new recruits under team instant action). Modes will unlock as you level up. Note that Instant Action will likely be the hardest mode to win, so I made a video with some tips: You can see the video under the trophy League of Your Own for more information.

The trophy that prevents a quick Platinum. It has been confirmed that you cannot just change the PS3's clock to earn this achievement as it goes by server time. If you play the game online on March 22nd, 2011 the earliest you will be able to obtain this trophy is September. You must have logged onto the Multiplayer and played a game to the end for it to count as your first time online. You do not need to be playing the game during the 6 months time so if you get all other trophies you can shelve this game and just pop it in 6 months later to get this trophy. Current Status of trophy glitching is confirmed, it has unlocked early for some people and has not unlocked for the majority of others. It appears that the trophy will unlock at the beginning of the month (at the earliest, September 2011) as the game cycles month passed instead of days passed. Playing a match at the beginning of every month after the 6 month period has passed is the best chance to attain this trophy. Causes of the glitch is unknown, many people in different situations have not received the trophy while others who have achieved the trophy are under similar conditions as those who have not.

Things that should be avoided (but will not guarantee you the trophy) are: Rebooting your nanosuit, playing Crysis 2 on more than 1 account on the same PS3, playing Crysis 2 on the same account on multiple PS3s and registering for a MyCrysis account via in game option.

Go into "Operative Status" in the multiplayer menu and then go down to "Dog Tags." The first tab "General'" has 64 Dog Tags which DO count towards this trophy. The combined other 3 tabs "Mystery," "Medals," and "Awards" total 64 x 3 = 192, making 256 total Dog Tags. Unlock 86 more Dog Tags to get this trophy. The Mystery Dog Tags are obtained by ranking up and obtaining unlock points, so when you hit level 50 you will have all mystery dogtag unlock points (128 Dogtags total, meaning you only need 32 more). The "medals" and "awards" Dog Tags must be attained through accomplishing hidden tasks and match awards respectively. This trophy has been mildly reported as glitching (not popping @ 150 dog tags), but does pop at 170+ for those who did not get it @ 150. So just keep earning unique tags and it will come.

For a work-in-progress list of Dog Tags, see here:
Partial Dog Tag List - Credit to Jumnious from Xbox360Achievements.org for the list.

Complete 3 ranked (non-private) matches of any game mode. Must play the matches out until the end, you don't have to be in them from the very beginning.

This is in reference to multiplayer, there are collectible Dog Tags in single player but those do not pertain to any trophy. Whenever you kill an enemy they will drop a Dog Tag where you killed them. You need to run over to their dead body and grab the Dog Tag before it disappears (usually stays for around 1 min 30 seconds). If you die before you collect the Dog Tag you can still go back and get it after you respawn if you're within the time limit. Alternatively you can use the "Retriever" power perk to automatically collect Dog Tags when your power module hits level 6. This trophy is cumulative and does not need to be done in one match.

Each suit module has various perks that can be assigned to it. For example you start out with the "Air Stomp" perk in your Armor module. For this trophy you need to fully level up any module perk to the 3rd rank. Each perk has specific requirements in order for it to level up.

Invite 2+ people or be invited to a party of 2+ and enter a game and play it to the end. People in the party do not need to be on your friends list. To find players to get this trophy please use the boosting thread found here: Crysis 2 Boosting Thread

Play each of the original maps (Non-DLC) on any Crysis 2 multiplayer mode until the end to unlock this trophy. You do not need to play all maps on one specific game mode, you can play 2 maps on Team Instant Action and 2 on Crash Site, etc as long as you play them until the end.

The maps required to play are:
Skyline, Downed Bird, Sanctuary, Parking Deck, City Hall, Lighthouse, Terminal, Evacuation, Liberty Island, Pier 17, Impact, Wallstreet

Custom classes are unlocked when you reach rank 5, simply enter the "Customize Equipment" menu from the multiplayer menu and select "Custom Class 1" and create a loadout with whatever guns, attachments, explosives and perks you want to use and then get back to the "Customize Equipment" menu for the trophy to unlock.