and he then gets abducted by aliens that are doing research on humans to prepare for an invasion but he gets loose on the ship and finds a section of human home interiors built for training purposes and he holds up in there setting booby traps and kills everyone on the ship
What if I wrote a story called Home Alone X and it's about Kevin McAllister who is now 34 and traumatized after joining the military at 16 to learn to defend himself and becoming a stoic green beret who is discharged for using booby traps all the time for everything for no reason