To find a way to open the gate in Family Business in Dwarve’s Favor follow the path until you get to the big wheel and jump through the gap in the wheel. Go onto the bridge and throw the axe at the white disk in the wheel:
Time the jump back through the wheel to when there are some broken spokes and follow the path back to the boat.
To return to Tyr’s travel room in The Sickness in The Journey in God of War go up the the pillar to the right of the door and hand over the blades of chaos to Brok:
Throw the blades of chaos at the sphere in the pillar:
and then at the sphere in the door and open the door:
Throw the blades of chaos back at the sphere in the door behind you and then at the sphere in the door ahead. Repeat the process for the next door, clear the thornes using the blades of chaos and go through the tunnel. Get the winds of hell from behind you and put them into the other sphere in the gate ahead: