Do you dare to take on the slimiest combat challenge in 99 Nights in the Forest? You will have to find 8 Frog Keys first!

This guide reveals the location of all 9 Vault Key Fragments in Borderlands 4's three zones - the Fadefields, Terminus Range, and Carcadia Burn.

For a series centred around legendary Vault Hunters, there's a surprising lack of vault hunting going on. I'm baffled to say ...