I don't know if you have something planned for the manual aiming
That is something I have to meditate, because the characters design philosophy for this game make them with different skills and gameplay, so you have the witch with her ranged set of abilities, but the bomber drop bombs at close range, and I have plans on making a character with a katana which is gonna be mostly melee and dodging gameplay. So I don't want give a wrong impression of making a game where every character can just move with WASD and win. Anyway your idea isn't discarded, I will see what people will tell me in the future and take a decision based on demand.
Enemies should have some sort of animation effect like your character does.
They will, I'm working on that.
I'm pretty sure that you're in all the enemies in one at a time at a random position around you. If you look at all the best survivors games they all have hand crafted waves.
I will check on that, right now enemies appear at random around the character, and the spawn rate and type of monster change after x amount of seconds. I gonna work on that and improve the spawn system because your right, wave are handcraft on most of this games.
Thank you for your review.