I never used bullet time the first time through. The second I did, and the game was ultra-easy.
I think there were way too many buttons for the game, though. I use esdf and have a 5 button mouse, so I can't imagine what wasd 3-button mousers did.
Buttons needed for:
Use
Reload
Grenade
Bullet time
Lean Left
Lean Right
Flashlight
Melee
Zoom
Crouch
Jump
All on top of movement and firing.
Just a few too many there. I put the 'nade button within easy use the first time through, switched it with bullet-time the second.
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