kinda major bug, seemingly randomly the game will not progress to the next level, has happened to me multiple times. upon closer inspection it looks like one of my archers is firing at nothing, a projectile will appear momentarily on the archer then disappear. I'm thinking maybe the game believes there are still enemies on the field? does not appear to be connected to any specific upgrade path as the archer it's happening with this time had an upgrade I had not used the last time it happened. only way around it I can see atm is to reload the page forcing me to restart the game