There's an annoying glitch during the first boss fight. If you die and he his gas attack or drops a gas pod on you before you finish exploding it will reset the death animation continuously until the gas stops. I died once and he repeatedly dropped gas pods where I died, keeping me from actually dying, making it so I couldn't leave the stage with my money.
 "Idleplex"){kind=icon}
 "Betty IX"){kind=icon}