Thanks for the feedback
The all the art except the cars and the characters inside are placeholders. Everything will change eventually
About the random damage, you are probably getting hit by the flying monster. The visual feedback for his attack is kinda lame for the time, i think some people don't even notice that he changes his colour and frame animation.
Like the art part, the visuals, animation and visual feedback from enemies will change when i actually do the sprites myself later.
About the driving and shooting, indeed. It's hard for everyone to play flawless doing both things (and using items as well). I will definetly try to ease these things a little bit so you can play more "safely", but all this crazyness of doing all this stuff will stay in the game.
More items are coming, but only 2 or 3 more. I don't think i can make lots of unique items that feel good. The fewer the better i think. Instead of focusing on items, the main thing is level design and how you can use those items.