Warhead delivers the goods with a fun story mode, smoother and prettier graphics, though it's real short.
Gameplay - Action packed, a number of wow sequences and interesting locales to shoot enemies at. Guns are fun to shoot, controls are great, nanosuit still a blast.
Graphics - All the eye candy you want until Crysis 2, Character, alien, vehichle and gun textures ARE very crisp though some environmental textures like leaves and stones aren't crisp . Impressive particle effects, especially the huge explosions.
Cutscenes are beautiful.
Sound - Great voice acting and weapon effects, and the alien screams are awesome.
Some cons include the linearity of the campaign and how ridiculously short it is.
All in all, Warhead is extremely fun to play, though short game.