You completed all 9 assassin missions.

You finished the story in less than 30 hours.

You completed the mission "That Special Someone".

You completed the mission "I'll Take Her".

You unlocked all the islands.

Defeat ten enemies in a row with a single punch, after softening them up with gunfire

Finish the game in Crushing Mode

Finish the game in Easy Mode

Finish the game in Hard Mode

Find all 100 treasures

Defeat ten enemies with grenades by aiming while hanging

Defeat 50 enemies with the Micro - 9mm

Defeat 30 enemies with the Moss - 12