Crysis 2

Lets break it down for those who may be having some trouble.

Tatics-
The best piece of advice i can give you, is dont shoot unless there are no other alternatives. A good example is in out of the ashes, when asked to tag the enemy Ship for an air strike. Instead of fighting everyone in the room, you can stay cloaked and stand right beside the Ceph shooting down into the street, tag the ship and then walk off with out having to battle it out for a few minutes.

Grab a Turret. In most parts where you have to battle heavies or shielded enemies their are either turrets before the area, or nearby. A few bullets from one will take a heavy down quick. Though limited to 150 bullets, burst firing the turret will increase accuracy, and if aiming for the head will mean you have alot more bullets for other enemies running around =D.

Slow and steady wins the race. Sometimes waiting can be a great help, often the enemies will move to different locations opening new routes that are faster or less dangerous. Enemies will also clump together in some locations, a well placed grenade or RPG can reduce their numbers fast making the battles (if you see no alternative) much less one sided. Crouching while stealth reduces power much slower, but also makes you move slower. Dont be afraid to sprint when you have to or crouch past a enemy when surrounded by guys.

Tagging your enemies, even in sections with out the suit telling you about it is a great benefit. Even if your not going to fight them the arrow above their heads helps to pin point their locations as they move around sections of the map and makes working out a route between you and your objective much easier.

Attack from behind ;). In all seriousness though, Stealth Attacks, or even grabbing enemies cause 1 hit kills and save valuable ammo, You cant grab Heavies or shielded enemies(given away by their brighter eyes and a flickering red when shot at), But by sneaking around picking enemies off your chance of survival in a critical section will improve vastly. Also attacking armored cars from behind means they have less time to get the HMG lined up, you can often blow up the car and stealth away before the enemy has even turned and spotted you =D

Pingers. Are Painful. But if you can save most of your explosives for them they die very quickly. Dont waste a weapon slot taking a L-tag(unless your in central station). If you search around as your making your way through the game you should be able to stock up on enough C4 and RPGs to take them out. Try going in Stealth when one turns up and let it focus on the Marines, then either go around the back and cover it in C4, or plant it on the ground and try to lure it over it. You can also take them down by shooting the red glowing ring on its back when its facing towards you.

Plan Key moments. During the helicopter fight in the lab, enemies will throw nades and shoot at you from the roof. If you wait a little bit, and pick some of them off they start roping down from the roof, some will drop RPGs making taking out the copter stupidly easy.

In the mission Corporate Collapse, after exiting the elevator you will be required to use a computer. Instead If you place a piece of C4 on the ground at the entrance of the hallways coming from the Elevator, you can take out all the Cell agents as soon as they come in the room.

Lastly some silenced weapons when shot during stealth wont remove your stealth completely. This means you can often take a few enemies out with headshots from close up then sneak off to recharge before taking out the rest. Semi automatic weapons when switched to single fire with a silencer can often take 2-3 shots before they drain your power completely.

Power Modules
Threat Tracker- Found this very useful early on, but ditched it later for the Proxy Alarm. Its good for when your suit is low on power and your not sure if its safe to decloak to recharge. Any bullets coming in will be highlighted giving away the position of the enemy you may have missed.
Proximity Alarm- Handy in close areas with lots of small rooms or corridors, when your not sure about sticking your head around a corner. Though it doesnt pinpoint their exact location, the puck noise will increase in volume the closer you get.
Cloak Tracker- Really only useful at the end when your fighting the cloaking Ceph. Went through the whole game multiple times and this was the only time i met any cloaking enemies.

Recommended mod- Proximity Alarm

Armor Modules
Armor Enhance- Though i used it alot through the easier difficulties, i ended up trading it for Deflection. On SS the enemies chew through your armor to fast for this to be of a real use, but each to their own.
Nano Recharge- This is by far the most useful Armor Mod, with the increase health and power regen its usefulness as an aid for your stealth is amazing. Though during unavoidable fighting sections i did switch this out for deflection.
Deflection- kinda the opposite of armor Enhance, instead of boosting the length of time you get, it boosts the defensive bonus you receive. Found this very handy when fighting Pingers as 1 on 1 this power seemed to help much more then Enhance.

Recommended mod- Nano Recharge(stealth) Deflection (fights)

Mobility Modules
Mobility Enhance- This was probably the most useful, as 90% of the time was spent sprinting from cover to cover, and reducing power usage is very important.
Air Friction- Didnt use this power as to much time in the open resulted in much death. =(
Air Stomp- Same as above, and the need to get close to use this made it not worth the swarm of bullets you would receive even if you manged to wipe out most of the enemy with it.

Recommended mod- Mobility Enhance

Stealth Modules
Covert Ops- While probably handy in rooms filled with guys, i could crouch and walk straight pass them with no problem. Maybe more useful if you plan to run around everywhere.
Tracker- While probably very useful if you dont want to use your visor all the time, i found that it was better to spend points getting Stealth Enhance.
Stealth Enhance- Probably the most useful Stealth power, but also the most expensive. The reduction it causes in power usage is enough that i could walk around the map section for quiet a while looking for another place closer to the objective to recharge, or observing where the enemies would be walking next.

Recommended mod- Stealth Enhance.

If you play the game first on the easiest difficulty and rank up your suit all the way it carries over to your hard playthrough from the beginning. Same with weapon attachments. So do that first and you can basically walk through the game on the hardest difficulty. I think I actually only fought 3 times and that was forced encounters. GOOD LUCK!!

For those people who have had this achievement 'glitch' on them, it seems that the save file gets corrupted somehow. After going through SS twice and not getting the achievement I started a new campaign on my other xbox with a completely fresh save and the achievement popped up at the end.

Either delete your save file or move it to a USB, disconnect the USB and start again. It's much easier the second/third time ;-). I'd save for Stealth Enhance and once you have that you can pretty much avoid most firfights and just walkthrough a lot of the game. My third playthrough took just over five hours using this method. It's not a perfect answer but it might be quicker than waiting for a patch.

For anyone struggling here is a link to a video walkthrough with no inherited upgrades or abilities, on the hardest difficulty with full commentary.

http://www.youtube.com/user/TheSeraphim17#grid/user/98C483E5...

Hope this helps.
P.S - I had the achievement glitch on me the first time I played through and all I did was delete the save, played as normal and I got it in this run.

If you did not get the achievement for super soldier, be sure to play the prologue(deep end) because it DOES count as a level that must be played on super soldier even if it doesn't record any information.

Hope this helps guys

Let it be said for those who have this achievement glitched that the same thing happened to me and I was able to get it, this is how I did it.

I moved my old save (from my first playthough) over to the cloud and then also onto a USB drive (just for redundancy).

I then booted up a brand new playthough of Crysis 2 on Supersoldier. Five hours later, I beat the game and the achievement popped for me.

I hope this helps.

if you didnt get this cheevo after beaten all the lvls on SS or all the other SS cheevos otw, then you need to delete your save file and play threw the game 2 more times, once one easy and then again on SS... i noticed the game likes to glitch hella hard on ya, at least it did for when i was playin it for a friend so i am had to play it 3 times for her basically and everything...hope this helps and thank god this short and easy game til you come across 2-3 parts that with the tanks that you cant run past.. other then that 4hr speed run game

Here are video guides I made many years ago to beat each level on Supersoldier difficulty:

Full Playlist
https://www.youtube.com/playlist?list=PL2AF4FE1A24574844

Mission 2: "Second Chance"
Mission 3: "Sudden Impact"
Mission 4: "Road Rage"
Mission 5: "Lab Rat"
Mission 6: "Gate Keepers"
Mission 7: "Dead Man Walking"
Mission 8: "Seat of Power"
Mission 9: "Dark Heart"
Mission 10: "Semper Fi or Die"
Mission 11: "Corporate Collapse"
Mission 12: "Train to Catch"
Mission 13: "Unsafe Haven"
Mission 14: "Terminus"
Mission 15: "Power Out"
Mission 16: "Eye of the Storm"
Mission 17: "Masks Off"
Mission 18: "Out of Ashes"
Mission 19: "A Walk in the Park"