From a story perspective, I think it would make sense that these Ricomen would carry some protective tech against their own weapons. If you want to communicate how powerful the bullets are, you could make the bullets that hit the player do damage but also strongly throw him backwards. Maybe even stun him. Speaking of which: If these bullets have pushback and some stun against regular enemies, the bullets would feel much stronger and would allow you to add more enemies. Right now the ricochet bullet doesn't feel too strong as the enemies simply keep moving on the first and second shot. (Bonuspoints: If an enemy that gets thrown back by the bullet is thrown back very strongly, ricochets off the walls and damages other enemies. This would emphasize on the ricochet mechanic and might add more depth.)
More feedback:
- I wish the stuff that damages you was more visible. Sometimes I took random damage without standing next to the blue crystals and without having been hit by the enemy "debris".
- I wish there were more enemy types and more level objects (like exploding barrels).