Sneaked past all Helghast in the Jungle without alerting any of them

Killed a Helghast by shooting a Burster plant

Open a shortcut for your team

Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.

Finish the Campaign on any difficulty

Complete Jackal Canyon in the Campaign

Complete Power Plant in the Campaign

Complete Blue Line Station in the Campaign

Complete Authority Prison in the Campaign

Complete The Well in the Campaign

Acquire Shadow

Help Jack and Frank into Milton

Singleplayer: Finish all of Deuce's missions