Talk:Persistant Upgrades!!!/@comment-5023233-20141229184637

Maybe this could be expanded to encompass when a tower pops X amounts of stuff, it could get an upgrade unlocked or whatever when it reaches a quota.

This quota could be changed for say a healing tower or something of the like, so after x amounts of damage is dealt or x amounts of damage is healed will give the unlock/reward. This can be expanded further for example with how much a tower gets done by using another tower's buffs.