I found that if you throw a grenade while the violence abolisher (wave 30) is starting to throw his axes. It slows the game slightly and the first set of axes he throws leaves a trail of axes behind them. Quite a crazy glitch (im assuming) to see!
Great game! I love these style of games. two things i would like to see though. One Is an increase in the speed of the slot machine. It feels like i spend more time waiting for the machine to spin than i do actually playing the game. The other (if its possible) is cause enemies to lose certain limbs depending on where they were shot when killed. Or for explosives taking off multiple limbs.
 "The Peacekeeper"){kind=icon}
 "Strike Force Heroes 2"){kind=icon}
 "Extreme Heli Boarding"){kind=icon}