I noticed right away the graphics seem wayyy watered down since the original crysis, explosions especially. This is on DX 10 and x64. FPS is still crappy on all mainstream graphics at 1680x1080 (not even native res)
Story is told horribly as if crytek assumes everyone played the first one (although its mainly true, but they use as a crutch it seems)
When the aliens came out, no one even seemed surprised or anything. Nothing is really said about it just keep going on your objective. The original is pretty much better in every way in my opinion. Just beat it tonight, gonna replay with some cheats on.