I think clarity is an important part of what makes a great soulslike, this is a great concept that I think could become really exciting if clarity were improved! Things like how long the flying electric orbs last, visual on hit effects for when the player and boss take damage, as well as a roll I think would elevate this quite a bit! The jump didn't really feel meaningful, I mostly just reacted to his spin attack and would move away, similarly the double jump upgrade just didn't feel super relevant. I was able to beat him with only the boomerang upgrade, I think it's possible with no other upgrades but without a roll I found it really hard to get damage in safely. Great job, this has potential!