Very cool idea! I found it fun to play!
if the goal is to simply stay alive as long as possible, I found that the AI were exploitable because when using both a vertical and horizontal axis, the speeds were additive, so I could move twice as fast. I found that using this method I could evade them indefinitely without use of my hole gun. It would've been very challenging indeed if the speed was capped so diagonal speed wasn't twice as fast.
Great job! I would appreciate if you would rate my game as well.