Make sure to first have SuperBLT, and BeardLib installed. Click the links in the dependency list.

Optional video tutorial for installing SuperBLT, BeardLib, and mod_overrides mods: https://youtu.be/rin_sjSJIkg

1. After downloading the mod, use a program such as 7zip or WinRAR to extract the main folder of the mod.
2. Move the main folder of the mod from step 1 to the Maps folder. Create the folder if necessary; BeardLib should create it automatically when launching the game with it.

Instructions written by me cause why not.
Make sure you have BeardLib and SuperBLT before downloading this mod.

1. Download the mod.
2. Extract the folder from the .zip file into Steam\steamapps\common\PAYDAY2\Maps.
3. You will find it under the Classics "contractor". Ignore the icon and the name.