That worm attack is a gigantic joke, it shouldn't attack buildings. You spawn with 1 base and you lose it in about 1 min because the enemy focuses it. So much fun.
The characters really is a pain in the ass to control. You can't stop him in the air, sometimes his jumps are ridiculously small, some other times they are huge and you cross almost the entire screen in a single jump and you have to start again. This kills all the fun.
I think you should have the autoshoot activated by default, or at least tell the player he can activate it in the settings. I accidently found it there when changing others settings and I never excepected to find it there.
That would be very helpful if during a training session we could see the total points gained and/or the global level. Often we start a session thinking "Let's get 200 more on this" or "Let's reach 3000 on this". But right now we are forced to leave the session to know it.
That's annoying, if you can't beat a wave really fast, the water gets full of floating bombs and all efforts to regain HP go away simply to breath. -_-
The game crashes a lot after loading a mission and it makes me download the whole game again each time. :/
Also, when dying (from explosions coming out of nowhere) nothing happens afterward, you got to manually open the menu and exit. A restart/exit button should be displayed in that case.