I would be extremely careful -- recommend replacing your "You lost animation". That flashing full screen (red light in particular) "Irrespective of luminance, a transition to or from a saturated red is also considered a risk."
https://developer.mozilla.org/en-US/docs/Web/Accessibility/Seizure_disorders#Flashing_blinking_flickering
That said, the core game loop was engaging, I wish that over time I saw some variation added every 3 towns or something. I like the animations, good retro sounds, and it was fun to run over enemies on one side of the missile while being forced to shoot enemies on the other side. Maybe you could give the missile truck some kind of super attack it can use every one minute so you're building up to something constantly instead of just waiting for the truck to die. I also wish that I didn't get fully upgraded ammo so quickly, or that I could make a tradeoff between ammo upgrades and tank speed or something equivalent. Fun game though!