lol... early battles (at least) made easy: meteor their hero ASAP to come straight to your starting forces for an easy kill. "counter" attack for a quick win. (doing this with 2nd hero)
Guide to this game: (op = optional)
*start (small zombies occur)
*op: find uzi (on level 1) (recommended)
*descend to level 2 (big zombies occur)
*op: find shotgun (on level 2)
*descend to level 3 (zombie dogs occur)
*op: find automatic rifle (on level 3) (recommended)
*descend to level 4 (tough slow zombies occur)
*op: find flamethrower (on level 4) (be careful with it, can do damage to you)
*descend to level 5 (this will trigger extra enemies)
*kill boss monster (found in center?)
*Ascend back to level 1
*Find stairs leading up to surface (only 1)
WOOT!!! Just got first place in a game of minions and my team lost :P, we didn't even hit their main tower once either. 15 kills probably helped though.
-.5 for lag (there is a tiny bit and my comp doesnt suck btw)
-1 for reccommending the keyboard be used as a guitar. Maybe if you have a dell keyboard or if you pull off your function keys