I died like 100 times but kept on playing haha :)
If I could provide some feedback on possible improvements:
- on some waves holding the shooting button prevents you from dying
- the enemies seem to see your from kilometres away so it's easy to die before you even see anyone
- I've seen a few enemies blocked on a wall so I acutally had to cruise around the map searching for them as they were stuck
It still got me hooked, so good job!