After crafting the all the equipments individually, you can go back to Valkyrian Warrior(@npc breaktheseal), then she will warp you to Goddess Freya(@npc btsreward) to give you the Sleipnir.
Crafting 2 of each Equipment will limit your quest into 5.
Ex: If you craft 2 Valkyrie Armor. That way, you cannot proceed on having a .
