What is Accelerated Back Hopping (ABH)? ABH is the ability to jump backwards and gain incredible, unnatural speed. Hl2 and Eps, Portal 1 - NOT Portal 2, L4Ds, TF2 or Counter-Strikes

Accelerated Back Hopping (ABH for short) is a Glitch, and it's the main method of movement on OrangeBox Engine-based games. ABH replaces Bunnyhopping, which was fixed in the OrangeBox Engine. It is also significantly faster than bunnyhopping. This gli

It's called ABH or accelerated backwards hopping. There's tons of tutorials out there if you want to learn how to do it, but it's really easy trust me. Just walk, jump, crouch, turn 180, keep jumping.