Dead Island Riptide achievements

38.12%

Siege Hammer

Install a total of 5 barricades during hub defense

40.96%

King among kings

Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater.

79.24%

BrainLess

Kill 50 monsters by smashing, decapitating or shooting them in the head