Edit: came back after 2 years. Still trash. Zero reason to download and play. Quick uninstall Bad. Horrible end game balance. Which is to say there is none. It's an insult to players to hit the wall between normal gameplay then next stages are impossible. Maybe if you played since day 1 and have been spending money since day 1 your units might have enough gear and stats to stand up to broken OP enemies. Until then have fun getting killed in 1 hit by lower level units.