In the bike races, whack off 69 bikers with a bat. (The Lost and Damned) - Grand Theft Auto IV
Help Billy get his bike back. (The Lost and Damned) - Grand Theft Auto IV
Complete all the main quests cooperatively with any number of partners - Dead Island Riptide (JP) (Xbox 360)
3,365/4,7951,055/1,50052/65
1,319/1,3191,000/1,00035/35
1,715/1,7151,250/1,25058/58