Kill 8 (or more) enemies with a single frag grenade.
Kill 5 (or more) enemies with a single frag grenade.
Kill 3 (or more) enemies with a single frag grenade.
Have a flashbanged enemy accidentally kill his own friend.
Neutralize someone while they are under the effect of a flashbang.
Over-cook a flash grenade.
Bait an enemy by talking nonsense, then take them out.
Get killed by a door bash.
Knock a startled enemy out
Choke an enemy out.
Over-cook a frag grenade.
You must really enjoy pain. Finish the game on 'Masochist' difficulty.
Kill 6 enemies with guns in under 5 seconds.
Kill 5 enemies with a shotgun in 10 seconds.
Kill someone with the shrapnel from a frag grenade.
Kill 3 enemies with guns under 5 seconds.
Kill yourself with your own frag grenade.
Have your frag grenade shrapnel kill you.
Finish the campaign without using any weapons.
Complete the game without killing a single enemy, unless when forced to.
Complete the game on the 'True' difficulty.
Complete the game with ammo auto-grab disabled.
Knock an enemy out with a door bash.
Complete the level "Steve's House" without firing a single shot.
Finish 'Abandoned Complex' without killing anyone.
Unlock all unique weapons.
Complete a level unarmed.
Complete a level without being detected.
Complete a level without killing anyone.
Complete a level without taking any damage.
Complete a level without saving once.
Complete the game on the 'Easy' difficulty.
Take out an enemy that's investigating an enemy body.
Bait an enemy with your microphone, then take them out.
Complete a level whilst using naught but the Taser.
Complete a level whilst using naught but the Tranquilizer Rifle.
Kill everyone throughout the campaign.
Pass out from drinking too much.
You really enjoy listening in on private matters, don't you?
Obtain a 100% accuracy rating with 40 or more shots fired.
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