It's not bad, but I have some Q's.
"Cheat codes *from EW1 still work! (press and hold YMP or ZLT or XHI to get SuperShotgun,Minigun or RocketLauncher)"
With the codes, where to I put the codes at? Do I have to hold the actual letters Y,M,P in order to unlock and where am I supposed to hold them? In the game; options menu, where? Also, the time limit of throwing the grenade has to be quick, those guys are killing me easily so make the time limit extremely short. And automatically 2-3 hits, I'm dead which is really... weird, lower that down. Also, add some more weapons in the game. I think you should get rid of the knife unless you're going to throw it like a dagger. I wish you would have more troops than just 1 or 2 maybe 4 or 5 would be good enough. You should also Make a code for invincibility, that would make the game even awesome. Oh well... Nice job though. I hope when you make EW3, you have all the good weapons and codes.