Morning Star (Gehenna) - The Binding of Isaac: Repentance OST

TBOI OST - 36 - Fundamentum "Foundation" (Burning Basement)

ULTRAKILL: VIOLENCE

ULTRAKILL Violence OST: Suffering Leaves Suffering Leaves

You can download the whole albums here: http://www.thinkwithportals.com/music.php 
Otherwise, you can just download the singular track straight from here.

Portal 2 Soundtrack - Halls Of Science 4

shifty 3 v 5 155 bpm

runx3 5 125 bpm take 1 31425

Portal 2 OST - The Part Where He Kills You

Chapter 2 - The Cold Boot - Catapult Intro

Main Menu 4

Main Menu 2

River of Despair (Downpour) - The Binding of Isaac: Repentance OST (Album Mix)

Chapter 2 - The Cold Boot - Catapult Intro

My Boi on a Sticc