You know, I kinda think you should make a ground based TD style game from this. EAF vs. Mars, add in the ability to play as Mars and maybe some random bonus units (perhaps from other games you've made ;)). I would enjoy that idea a lot. Tower Defense where BOTH sides can train units and build towers... Well, that'd be an RTS, but still...
skitzoman... If you mean the poor English grammar, then I think somebody who commented on another game by this same guy was right: English may not be his first language. And most translation websites give literal word-for-word translations, not grammar. Some of you are complaining about the unit release thing, but I just spam Avengers when that happens. Works almost every time. Almost, not always.
Here's the full list of achievements: hobbits = read instructions/credits. dwarves = reload the game 3 times. bombermen = lose 3 times. angels = upgrade everything for all 3 races (humans orcs elves). red dragons = defeated level 17. devils = defeated level 18
Actually, I don't think it really is a TD game. More of an RTS if you ask me. As for saving, I don't have to start from the very begining, but level 3 is a bit of an improvement. 4/5 until something is done about the save thing, if possible.
I discovered something about the easy exp thing. You DO NOT need to save up mana past 100 or so before you start spamming. I started with it at 40 and won due to the mass slaughtering of goblins.