Cool idea, managed to beat it on the first time through. Was pretty close with the boss tho. I'll do my best to provide constructive feedback :)
- Like others mentioned, stats about the defenses and their upgrades would be a great addition. Its hard to make any kind of strategic decisions when you don't know how the towers differ from each other.
- Also enemy health or some other indication of how close the enemy is to dying, and tower range would be nice to see in this kind of game.
- First I was confused on what I was supposed to do because I didn't read the description with the controls and they are not displayed ingame.
- The aim of the towers seems to lag behind the enemies, especially when shooting from afar (especially noticeable with the "fire everything" ability.)
- Maybe the boss should also go along the route, but that may be a matter of taste.
With that being said, I really liked the music and sound design. The bgm is banging and especially the laser sfx was really satisfying. The sprites and animations are also very cool with a coherent style. Didn't come across any kind of bugs or real issues with the program either
Enjoyed this game. Keep making more games!