The monkey see, monkey doom acheivement... just want to verify that it is best to throw the monkey at a group of 3 or more zombies to chain them together. Modified my info below:
Monkey See, Monkey Doom
After killing a bunch of zombies consecutavly, a symbol monkey will randomly drop. You need to grab it and throw it at a small group of zombies (3 or more). It will chain them together and kill them. Once they die, another white monkey (white glowing) will spawn, pick it up and the achievement will pop.