Hey, thanks for installing. So the steps will be as follows:

1. Open Rip and Teardown with .7zip or win.rar
2. Extract files somewhere
3. Make sure to back up any original weapons
4. Slap the new files in Steam > steamapps > common > Teardown > data > vox > tools
5. Rename weapon to what's in the brackets. Example: Doom 2 Super Shotgun (shotgun).vox  -----> shotgun.vox
6. Enjoy! 

Please do not mess these files up. Ya boy spent at least a week making these things.
If you have any questions, message me on discord at CheggChegg#5483