Found all Pictures

Chose all of the Heart decisions

Found all of the black framed Pictures

Opened the window without making noise

Conrad successfully flirted with Fliss

Get a kill with each type of handheld gun, explosive and launcher in the single player campaign.

Kill all 4 tanks on the overpass with the Javelin missile in 'The Bog'.

Kill 20 attack dogs with a knife.

Complete any level using only the knife to kill enemies.

Find the Desert Eagle in 'Crew Expendable' and kill 5 enemies with it.

Destroy 8 enemy helicopters in 'Heat'.

Find 30 enemy intel items.