idea:
crossbowman: shoot 5 projectile at the enemy every projectile does 1 damage but bad accuracy
mage: shoot 1 3 damage homing projectile long reload time
pulse bot: can switch in between two states (state 1: have 4 spikes that deal 3 damage) (state 2: the pulse bot activates a shield around itself block projectile and attack) can also heal by engineer and defender