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Even with a flawless auto-bunnyhop script, you still need to know how to strafe. Without it, you're just hopping in place. The basics are:
: Go to the addons folder. If it doesn't exist, create it. Inside, create a new text file named autobhop.vdf . Open it and paste:
Overview
: Removes the game's hard speed cap that normally slows you down after a jump.
Skilled bunnies can reach speeds of 300-400 u/s or higher, making them nearly impossible for Special Infected to catch.
Before diving into automation, it's crucial to understand the underlying technique. Bunny hopping, or bhopping, is a movement exploit rooted in the physics of the Source engine. The core principle is simple: you jump repeatedly the moment your character touches the ground. In Left 4 Dead 2, unlike many other modern shooters, the game's physics place on the player. left 4 dead 2 auto bunny hop full
; Press F3 to toggle auto-duck (makes "full" possible) F3:: DuckEnabled := !DuckEnabled if (DuckEnabled) TrayTip, L4D2 Bhop, Full Mode ON (Auto duck), 1 else TrayTip, L4D2 Bhop, Full Mode OFF, 1 return
Right-click the script and select "Edit." Delete everything and paste this advanced code:
This script, as posted on the AutoHotkey forums, sends a rapid "down-up" sequence every 50 milliseconds while you hold space, effectively automating the jump. This public link is valid for 7 days
Left 4 Dead 2 is unique in the Source catalog because it has . In many other games using this engine, there is a hard limit on how fast you can move. In L4D2 , you are only limited by your skill and the terrain. While bunny hopping offers massive speed advantages, it comes with a significant risk: if you miss even a single jump (timing it just a few milliseconds too early or late), you lose all of your built‑up speed instantly.
A: In a competitive (Versus) or public matchmaking context, most of the community views it as cheating because it gives you an unfair movement advantage. In a private co‑op game or a speedrun that allows mods, it is generally accepted.