Since the latest drivers update, 18.3.1, Vermintide 2 got some issues with the lighting of certain areas, mostly caused by some torches in the Festering grounds level.
The level completely goes black until the Gamma settings are changed, but as soon as another torch is encountered, darkness comes back.
Other people have the same issues as reported in this thread https://www.reddit.com/r/Vermintide/comments/82kcv1/bug_new_bug_on_latest_amd_drivers_torches_in/
Vermintide 2 Darkness Bug - Album on Imgur
Running the latest drivers on a RX 480 with no OC and Windows 10 64 bit.
AMD bug report forms seems to not be working right now, hence posting this here.