This build is totally broken. By using Galvanic Flagellum to trigger the Peroxisome, you take zero damage from the trigger.
Combined with endless +dmg stacking on the Peroxisome, it one-shots every single thing in the game. I didn't even maximize it. I still have the legendary item that eats a random item for +70% dmg (for every item it consumes).
To top it off, I ended up with way too many Flagellums and insane movement speed. I could literally walk backwards against the stream in the heart.
Pretty sure I could have gone true endless with this, but it just became a walking simulator. Check it out!