@dragon5598 have you tried not using creatures till they are gone? it is fairly easy to get rid of both and just suffer minimal damage after a few turns
You can click the next wave multiple times, allowing multiple wins with each level. Currently I am at 50 on everything and I can just use one tower easily
got stuck (need to be 1 lvl higher), should be a way to either kill yourself or a menu system. Any game should be playable straight through (or at least give you warning that you have to be a certain level), but this game is not...