Sir, We Have an Orc Problem

It's good, but I have some constructive criticism that I hope might help take this game from good to great. I like this game and I want to play more of it. But I probably won't without some of these tweaks in a future update. 1) It was never clear to me that I only got those little cubes if I completed the level with taking no damage until after I had completed the game and went back to the beginning to try the early levels with upgraded weapons. I was locked out from some branches on the tree just because I didn't know how to get more cubes. This may have been explained, but if it was I missed it so take it as a data point. 2) It isn't very challenging. And that's okay, it's good for casual players. Even though I was locked out from a few branches of the tree I wasn't ever uncertain that I could beat a level. Don't get me wrong, there was a clear escalation in difficulty, but the game was over before I really had to struggle. 3) And this ties in with two. Not enough maps. I don't feel cheated for $10, but with this kind of game I assume it's pretty easy to make just a few more maps. Maybe one or two per difficulty level, and then a few more difficulty levels higher than the current max. And paid DLC is not a fix for more maps (or more enemy variety). Not in this case. I don't feel cheated for $10 but I did expect more and feel that with the traction this game is getting that a bit more work in this area is justified in standard updates 3) I'm not sure how I feel about making later orcs bullet spongey. Why do these guys take more hits? Do they have kevlar? If so why do they look the same? Maybe make them faster instead or just keep adding more until it is absurd. 4) General polish. I won't list a bunch of examples, but you know it when you see it. 3 that stood out though: Enemy sprite/model/whatever you use variety is low. Only one AI behavior, the menu screams "I was coded with Claude." Some stuff I really like by the way: Content, variety, and upgrade system for weapons is good. I liked that no single weapon was good enough for every situation. I never really got bored of any single one because they always had their specific case where a different one couldn't quite get the job done.