Hellblade: Senua's Sacrifice - Valravn boss fight

This video features the boss fight against Valravn, the God of Illusion, from Hellblade: Senua's Sacrifice, along with both the intro and the outro cutscene for said battle.
Notice that this video was recorded on the PC version of the game and while playing the game with the combat difficulty set to Normal.
Valravn is the second, halfway point boss of Hellblade and is definitely a noticeable step up in difficulty from the first one, Surt. While nearly all Valravn's attacks are parriable the boss himself is arguably the fastest enemy in the game, to the point that consistently damaging him without achieving perfect parries becomes difficult and you may be on the reciving end of his few unblockable attacks too easily. Valravn has also several attacks at his disposal and can cover all ranges.
During the fight Valravn will also sometimes retreat and summon a handful of illusionary warrior for you to fight as he recovers, whom are arguably the easiest part of the fight.
Much like in the battle against Surt, the last leg of the encounter involves Senua having to hit the boss while using her focus in order to actually damage him and finally bring him down