Big words here! Thnx for playing and glad you had a good experience with the game. About evading bullets: Bullet collision in the case of the player happens around the area where the hit-hinting shows up so you will be safe if you collide with them far from that point, the strategy would be roll out of the impact point (if the bullets are close) or just move out of the way. Maybe enemies should not come that far down to prevent those almost horizontal firing lines. A similar thing happens with the enemies, bullets only impact around the area the crosshair/reticle was originally when you fired them.
A mechanic I left out was shooting enemy bullets, I might consider bringing that in though probably difficulty will drop a bit in this case.