Adds 13 achievements related to the M4A1-S custom weapon you can find here: https://modworkshop.net/mydownloads.php?action=view_down&did=19760
You will need the achievement API here: https://modworkshop.net/mydownloads.php?action=view_down&did=19503

I changed a few things on how I'm setting up the mod, so this one should support auto-updates without messing your achievement progress, and doesn't need a mod_overrides part anymore. It also fully support the new trophy ranking system.

You can see the achievements in the image previews.

Extract both folders in PAYDAY 2/mods/.