Monster House(GBA) Hard Mode all bosses defeated with Doom Bringer 3000

Thank god there are save spots(Washrooms) just right before the second last boss battle(The Final Mannequin ) or else it would have taken much longer to make this video. Also, I took damage on the last boss so that I could show you people a glitch at the end of the video. One more thing, the Doom Bringer 3000 is overpowered.