M17 Base - final boss: Steiner | Chapter 6 DARK Guide
Last update: 11 May 2016
Use the stairs to descend to the ground level and choose one of the entrances to the arena in order to begin a duel with Steiner. It's worth mentioning here that if you've managed to rescue Tom recently then he will now be murdered by the mutant and sadly you won't be allowed to prevent it from happening.
A fight with Steiner is much easier than you might think. You won't have to use any of your offensive vampiric abilities and you also won't have to fight the boss in close combat. Instead focus on staying on the run and ignoring powerful stomps performed by Steiner. The game will always warn you about his upcoming attack - you'll see circles appearing on the floor (screen above) and obviously your job will be to move away from the endangered area in time. If you do receive some injuries then don't forget to use Regeneration to heal yourself (it's highly recommended to fully upgrade this power).
Keep attacking the boss until you receive an information from Rose about activating one of the nearby terminals. Approach this terminal as soon as possible and interact with it.
The duel will have a similar progress from now on and the only new thing will be Steiner's alternative charge. It will be slightly faster than his usual stomps, but you'll still be warned by circles appearing on the ground.
You must keep repeating the actions described above by approaching and activating other computer terminals. Your job is to activate four terminals in total, because that's when you'll watch a new cut-scene and will have to choose an ending.