For anybody having trouble on the Cursed Mine map get the warrior skill tree to include archer, then the placement is two fire mages up front use as inflictors with cripple then on the bottom put at least two fire mages to kill straggling bats. As the rats come put two warriors on the front of the middle block upgrade only one of them through these stages: Cold, Armour percing, Specalist, and Archer this should allow you to kill the frogs and bats and the fire mages take care of the wave 5 boss. The protecter series is a great game, Let's all hope Undefined makes a fifth