Alternate-reality-Regulith (ARR) stops sipping his tea and runs to the foot of the alternate-reality-hill (ARH)
ARR pulls his Reality Combination Discombobulating Device from his pocket and combines the hill present in his reality (which his 346-story fortress is conveniently perched upon, as in this reality he won the hill long ago) with the hill present in this reality.
He sets the Combine option to "Replace All"
All current objects colliding with his fortress are pulled from the fabric of space-time and deposited in ARR's Universal Recycle Bin. The beautiful fortress, completely impenetrable by all means thanks to ARR's Negation Shield (which stops all physical bodies from passing through by first reducing acceleration to zero and then matching the force being applied to move it, all mental bodies from passing through by invading the body and canceling out all thought, and any attempt to pull the stuff he just pulled by enforcing a strict "No copying" rule), fades into the current reality, ARR included.
ARR laughs heartily at his fallen enemies and at how amazingly awesome he is before emptying his Universal Recycle Bin into oblivion.