i forgot to add it in but also make sure to replace the music with what your character's boss theme would be! okay so basically there are normal bosses which are bosses your gonna see mostly but there are a rare chance for a random unique rare boss that can appear in place of the normal boss, all of the bosses give you a some kind of powerful weapon when defeated of which can be upgraded to be more powerfull! the player always have a weak melee weapon that the can use when clicking, it only deals 1 damage and is very short range. AALSO YOUR ITEM CAN JUST BE A PASSIVE ITEM THAT CAN EFFECT THE PLAYER'S STATS OR ENEMY SPAWNS JUST WANT TO LET YOU KNOW also it would help a lot if you added animations of your character doing the attacks in the project just remember THE GAME IS A TOP DOWN VIEW ALRIGHT?
music from vampire survivors