at present there's only one boss, but all enemies scale up as you level so you shouldn't be able to get too OP - the specifics probably need fine tuning mind!
the intention with the 4th level is that it finishes when the vehicle crashes into the walls at the end, sadly I didn't get time to work on fine tuning that too much and I need to update it so no enemies spawn in that end zone as well as having the walls block the projectiles. If you've made it to the end you deserve to be safe 😆
