Get a perfect score at the Firing Range on any difficulty.

Complete mission "Lair of the Harpy".

Complete mission "Beneath the Meridian".

Down yourself by grenade or explosion.

Complete mission "Atlas, At Last".

Complete mission "Hostile Takeover".

Kill an enemy with an exploding barrel.

Win a live grenade at a Slot Machine.

Reach level 10.

Complete mission "Children of the Vault".

Reach level 2.

Obtained all trophies.

Completed 30 Bonus Battles.