16 1 0Actions Report Solution To unlock 'Saving Private Marius' you must complete 'Trial By Fire' on any difficulty, from Beginner to Centurion. By the time you start Legendary, this will already have unlocked.Trial By Fire is the third chapter within the game, and includes the assault on the beachhead. Story related and can't be missed.Guide not helping? View 1 more guide for this achievement.Leave a comment
11 1 0Actions Report Solution As the name implies, just beat the chapter "Trial By Fire" to get this achievement. I have included a video showing myself beat it (All collectibles included)