CactusOfSupply's Map Pack (Level Test) [Level Chaos]

Make sure you have Baldi's Basics Plus Install

If You Already Have the Level Editor Mod Installed

Step 1: Open Run on Your PC [Windows+R]

Step 2: Type "appdata" Then Enter

Step 3: Open The File of the Map and Copy and Paste the Level into the CustomMaps File

Step 4: Open The Game and Enter the Editor

Step 5: Click Load

Step 6: DONE! now open play the level

IF YOU DON'T HAVE THE MOD WATCH THIS VIDEO: How to Install and Setup [Baldi's Basics Level Editor] (youtube.com)