I got to level 206 before dying.
My setup was several items that heightened bullet count and ammo usage, the sticky grip, and the almighty spinigun. Shooting while reloading mixed with absurd bullet counts and running out ammo quick so I can get to the reload with fast auto shots was a good synergy.
TL;DR: 10/10 would spontaneously combust again.
My highest was about 380-something, I made a build that essentially one shot most bosses; used the rounds that follow cursor, 4 barrel attachment, the barrel stock that shoots backwards(but will also follow cursor because of ammo type), 5 burst, and bullet canister.
Only downside to this build is that it lags my Chromebook and I cant see half the screen because there's so many bullets which is actually why I ended up dying (walked into spike trap that I didn't notice).
