Complete the indicated level in Story mode to unlock the corresponding costume.
Costume
Level
Diyar Tracker
Firstborn level.
Fiend's Battle Path Armor
The Last Titan level.
Original Tyris
Death = Adder level.
Undead Scout
Queen of the Dead level.
Wastelands Scout
Secondborn level.
Brutal difficulty
Successfully complete Story mode.
Completion bonus
Successfully complete the game. Select the "Challenge mode" option and start at the beginning to play with your previously unlocked costumes and weapons. Note: Your original costume will still appear during intermission sequences.