Catch 25 enemies in the Electric Fence trap

Perform 45 kills with the M1911 Handgun in Multiplayer

Use a saddle to ride a pig, then have the pig get hurt from fall damage while riding it.

Achieve 100% completion

Unlock and purchase all characters

Find all the Joker cards

Kill an enemy with a wrench, using Vault followed by Drop Attack

Kill 25 enemies using Ground Pound or Drop Attack

Kill 100 enemies by kicking them off the rooftops/cliffs.

Jump to the water from the Infamy Bridge (Slums) at night

Perform 10 successful Lockpicks

Meet with Rais

Reach Power Prof. Lvl 10