The River of Blood Add-on for Back 4 Blood (PS4) has 13 trophies - 13 bronze.
Blow up a Food Item with the LAW.
Earn a score of at least 100,000 in Trial of the Worm.
Complete a map in Trial of the Worm with a total modifier of at least x20.
Play Trial of the Worm for the first time.
Complete all Act 6 maps on Nightmare difficulty or higher.
Complete all Act 6 maps on No Hope difficulty.
Land a final blow on a Boss Mutation with the LAW.
Set an enemy on fire with the Flame Thrower, while also being on fire.
Complete all Act 6 maps on Recruit difficulty or higher.
Complete all Act 6 maps on Veteran difficulty or higher.
Defeat The Harbinger without using the LAW.
Kill all variants of the Sentinel.
Find the Secret in Act 6.