Nothing as satisfying as putting a bullet in a jerrycan on the back of a HMMWV as it drives by, trailing fire and then exploding. Or stick charge to armoured vehicle and sneak away again. Pressing that detonator is very satisfying as well.
In the graveyard, I either exposed myself and cloaked when they saw me. They cloak > no more maximum armour for them > headshot with guass rifle, done. OR sneak around cloaked and draw 1 away from his mates by throwing a stick at him. He goes searching, put a tranq dart in him when he's out of sight, couple of bashes on his head with maximum strength, rince and repeat.
Great thing about Crysis is that you can play how you want. Stealth? Sure. Psycho? Sure.
Can only do that in RPG normally, and you have to choose a class that matches your playing style... thereby limiting you to that playing style.
*ps: Ah, yes, the general. IIRC 3 shotgun blasts to the head at point blank range and at narrow spread did the trick nicely.