Back 4 Blood Supply Points and Certain Achievements Locked Behind Online Mode

Developer Turtle Rock Studios has locked achievements progression and supply points for Back 4 Blood behind the online mode.

Back 4 Blood Accessories Guide

Back 4 Blood Guide: Best way to farm Supply Points — Too Much Gaming

Free Back 4 Blood update adds solo offline campaign mode with progression, achievements and more

Back 4 Blood: Locked door - how to open?

Back 4 Blood Doesn't Let Solo Mode Players Unlock Achievements

You are forced to play online to earn anything in this game. Huge disappointment. I hope they change this. : r/Back4Blood

Back 4 Blood Guide: 5 Things To Know Before Starting - GameSpot

Back 4 Blood Trophy Guide & Road Map

Back 4 Blood Supply Lines, cards, and decks explained

Back 4 Blood FREE December Update Available Now, Incl. Solo Offline Campaign Mode with Progression, Holiday Themed Content and More - Games Press