Defeat 30 enemies with the T-Bolt Sniper

Defeat 50 enemies in a row without auto-reloading

Defeat 50 enemies with stealth attacks

Defeat 30 enemies with the Tau Sniper

Defeat ten enemies with grenades by aiming while hanging

Make five enemies drop their grenade by shooting them

Defeat ten enemies with propane or acetylene tank explosions

Find the Strange Relic

Inspect almost every display case in the Cartagena Museum

Defeat five enemies in a row with headshots

Defeat ten enemies using hand-to-hand combat on the back of the convoy trucks

Defeat five enemies in a row using stealth attacks