Ok, so I wanted to start a thread discussing strategies for Sentinel (there are already threads for Dungeon Defense, Elemental Monster, Fieldrunners, Geodefense, etc), but I think the strategies in Sentinel Differ for various reasons. I started on Medium, and I have yet to beat the second map. I can get close to 90 waves, but I can't seem to get all the way. My issue seems to deal with running out of money too fast. I hope to get a good discussion running on different strategies used by you TD geniuses out there (myself NOT included ).