Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.

Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.

You completed a mission without raising alarm.

You escaped from Germany.

You got lucky with Skylar.

You've arrived in Germany with Jules.

Release Jeff from his Trap.

Idle for five minutes.

First kill with a Scalpel.

Used 20 Health Syringes.

First kill with a Crutch.

Release Melissa from her Trap.