Break Through Ruins Skip, or more commonly called BTR Skip, is not necessarily a skip for the entire mission but a way to skip having to use the Slam Dozer to complete the mission. By entering Palace Ruins with a side mission timer active, you can prevent the enemies and other assets from loading in correctly. This effect also transfers into the Break Through Ruins mission, causing the Slam Dozer and enemies to not spawn. This allows Jak to continue on foot and complete the mission much quicker by hovering over walls and other collision.
BTR skip was discovered on April 3, 2022 by TheZanderful.