The Armor of Tyr
 

Where i can find it? And do i get 9th rage ability when rise all Valkiries to lvl 5?

I forget about where the shield came from, but the last rage ability is obtained when you defeated a boss on the island called The Riftlands, which you can access through the New Kordar tunnels.

Armor/Shield comes from a very powerful random creep encounter near Nekrotix (also on Riftlands).

Last Rage ability is from Loki (Riftlands).

Armor/Shield comes from a weak mob on the other island...

Armor is on graveyard near old druid where you need to beat Necromancers (in my case Bone Dragons to get it)

shield is in isterreng at this location

killed nekrotix and everything else in riftland. No Armor of Tyr. Any help?

( Visited all containers, cleaned up underground areas and finally made sure I found all the treasures by cheating dig radius to 300... also recovered all the chests from the sea, no luck )

Did you try to speak to the valkyrie? I did not remember picking up the armor at any point but when I talked to the valkyrie at some point it turned out I already had it.