Just do a Google. I found this floating around some obscure cheat site... (Why dont we list them here at TWHL, anyway?)
HEV suit, weapons, and ammo /impulse 101
Spawns gibs and blood /impulse 102
Monster stats, while looking at monster /impulse 103
List global entities /impulse 104
Silent player /impulse 105
Model/sprite stats, while looking at target /impulse 106
Texture name, while looking at object /impulse 107
Control onscreen monsters /impulse 109
AI node information /impulse 195
AI node information /impulse 196
AI node information /impulse 197
AI node information /impulse 199
Delete monster or NPC from world /impulse 203