Hell hath no fury (like a man in green armor)

After getting surprisingly bamboozled by Samuel 'Iron A-hole' Hayden, everybody's favorite green soldier(not Master Chief) finds himself in a whole new world filled with a bunch of hormonal demon teenagers. with a sawed off in one hand and a chainsaw in the other(and a whole slew of weapons capable of melting your bones) Doomguy is plagued with one single question.

Can I murder my way back home?

(Doom × High School DxD)