I notice both the tanks have to run out of health for you to lose, meaning you're best focusing on one. And after you've killed everything on the left if that guy still has health you can't lose.
The game was made by a team of 4 people. If you need music, you can enable it in "Settings".
The game uses the idea of a Mobius strip.
MYline media( https://www.instagram.com/myline.media/);