Scenario: build generic terrain like small walls, rocks, and hills in a 3'x3' space.
wave 1: 6 zombies or skeletons
wave 2: 1 minotaur, 1 ogre, 4 zombies or skeletons
wave 3: 1 wight, 1 minotaur or ogre, 4 zombies or skeletons
short rest
wave 4: 2 wights, 2 ogres or minotaurs, 2 zombies or skeletons
short rest
wave 5: 1 Flameskull, 6 zombies or skeletons
