GameInformer- "Dead Island 2 is still over half a year away, but the team at Yager brought a brief playable demo to Gamescom to show off the improvements to core systems, including combat and crafting. We went through the experience twice, once with the Berserker and once with the Speedster.
The two play very differently, with foot speed making a big difference. The Berserker trends toward heavy weapons, with slower, movement and heavier swings. The Speedster is notably faster (as you might expect), preferring bladed weapons and sneaking up behind zombies for an instant backstab kill."