I think that you could have more than two Minotaur's without being over run is if instead of them having an indestructible force field it is instead a breakable shield but once its broken you get a 4 to 3 second window before they get their shield back and also if you don't break the shield it starts to regenerate and along with this, penetration like weapon like greed can penetrate the shield doing a small or medium amount of damage to the Minotaur and doing medium or large amount of damage against the shield, also when the Minotaur rams into a wall the shield is gone for only the time they are down, And also maybe instead of only getting health when leveling up or killing a boss is instead the health is percentage based and when you get "xp" you also get a small amount of health, like one or two percent per enemy so you still have to be careful and manage your health but at the same time it makes managing health a tad bit easier and also maybe the further along in the waves the enemy's drop a give a bit more health but only a few percentiles more. But that's just my opinion, and also Really great game and i hope this project get more and more recognition and support :)