Kill 75 enemies with the rifle.

Kill FeeFee the crab.

Collect 5000 pieces of salvage.

Find 25% of GPS caches.

Kill 50 enemies with the bow.

Force an enemy to drop dynamite that kills two people when exploding.

Perform 50 headshot kills in the single player campaign.

Find 25% of all documents.

Defeat Grundy using the Shock Batarang and water

Get a 25 hit combo

Beatdown 10 thugs

In the "Ground Zeroes" mission, rescue the prisoner to be executed and extract him via chopper

Reach Heat 10