Talk:Ember/Prime/@comment-24335976-20131227230016/@comment-24386924-20140109013335

Play Defense. I usually get a keys from the 5th wave, certain for the 10th wave you get a key.

For Survival use penta + Rhino built in strength to have a nice Iron Skin, spaming nades and Rhino Stomp to get all the life support and finishing mobs. Not that hard to solo survival.