Step 1 - Pull the pin on the grenade
Step 2 - Throw the grenade at the enemy
That's laughably stupid.
But sheesh...Crysis 2 has even MORE stupidity!
Some examples...
1) A Cylon will have you in full view and go right past you to the other end of the room...
a) That Cylon will then try and walk through rock.
b) That Cylon will continue to try and walk through rock...on the assumption, presumably, that they are more likely to succeed on subsequent attempts.
2) CELL personnel will see a CELL corpse you have recently killed and...walk right by him and not go into alert!
The load screen did mention throwing objects to distract guards...something I hadn't thought of doing but that showed depth to the gameplay. So, I tried it out...
3) CELL personnel will ignore a big gas cylinder (or whatever it was) thrown near them.
I'm not sure if this is intentionally funny or not, but...
4) When you get the blackout, one of the Cylons 'skates' around in a very small circle. I took that as a joke. But...
5) It's just glitchy when the Cylon spins around on one spot, like a top. Is the 'skating' just a less obvious glitch?
Honestly, these were so groanworthy I just had to point them out. Here's my hypothesis on how this came to be:
The boss would regularly check in on the debuggers and game testers or whatever they are called and seeing that they were doing their job. About halfway through the development or something the boss stopped doing that and the employees started playing screwed up bits of paper basketball in the office or something.
Even if the enemy was stupid in the traditional way, as in merely being fodder for your character's killing, it would have been heaps better than just laughably abysmal enemy AI you see in this game.