Kill an enemy with frag grenade shrapnel.

Neutralize someone while they are under the effect of a flashbang.

Kill 5 enemies with a single fire source.

Choke an enemy out.

Knock 5 enemies out with a single Gas Grenade.

Knock an enemy out with a door bash.

Finish a level without killing anyone.

Complete a level without being detected.

Knock everyone out in a level without having been detected.

Finish the game on 'True' difficulty.

Complete a level without saving manually.

Complete a level without taking any damage.

Have an enemy kill one of their own by blindfire.

Kill an enemy with their own grenade.

Blind an enemy with their own flashbang grenade.

Throw an enemy grenade back.

Knock an enemy out with a heavy throwable object.

Get 5 headshots in a row.

Finish a level without using Slo-mo.

Finish a campaign without using Slo-mo.

Finish a campaign without killing anyone.