THANK YOU so much!
you can buy weapons when you die. i assume you didn't continue to die, when you die you can buy a second weapon for you current tank to collect more kills ( floating skulls ) that appear in the top left, and then buy another tanks with more powerful weapons, it's when you die.
I recently added the progress bar to track the progress of the game, i believe it keeps the player playing especially when there is a day mode to reach, idk i just feel it adds some addiction.
If you want to restart the game just press the restart button on the pause menu ! i don't know how you missed it :') .
BUT i really don't know how you started wave 3 with score of 0 ! probably a bug but everything works fine with me, i should do more testing. and are you sure that shooting ships but not killing them still results the contunuing to lose health ? lol because i didn't do that !
thank you very much for your motivating feedback, please can you just make sure that ships don't keep loosing help when not shooting them ? since i don't really have play testers lol