First of all loved the game :D Each bullet having diffrent abilities diffrent runs reminds me of binding of isaacs pill system. Trying a new bullet is always exciting :D Its interesing that our games are similar despite being diffrent genres :o. Overall loved the game i definetly want you to work on this to see what can you do :D
EDIT: Also when you scroll the mouse the click effect makes the game 100 times immersive.