Watching his portals fluctuate in power, no doubt due to the alien alloys of the mothership, MC got... well, Annoyed. while they did stay open for a small bit of time, MC couldn't bring any of them to speed in order to knock them off the ship. So instead he decided to just portal into the ship below him. 

An alarm began to sound when MC entered the ship,, and it became a game of cat and mouse as MC just portaled through wall after wall.