TIP: Gustav comes around with a guy that gambles.. If you manage to keep winning and clean him out in one visit then you will WIN a secret rare item. This item is the best in the game! I wont spoil it for you :)
@ Nauto 98001 actually infection chance maxes out at 110% (level 25) not 115% weather it spawns two zombies from one kill yet i cant tell as the game gets rather hectic.
 "Rebuild 2"){kind=icon}
 "Infectonator : World Dominator"){kind=icon}