You can enter The Dead Hand Dungeon from The Exalted Plains (42)
Go to the bottom of pit. Loot Codex entry on right. Loot Mosaic Piece on left.
ITEM: Mosaic Piece
Now its time for puzzle, its looks crazy but its easy.
First teach how to use "Hold Position" command to stay still party memeber when you need it.
Puzzle in this Dungeon is to light 4 spheres (B1, B2, B3, B4) in the center shooting with Archer (A). Trigger to turn statue and shot with archer is in (X).
Trick is that pillars (P1, P2, P3, P4) block arrows from hitting spheres. We should lower pillars and light spheres.
Stand with one of your team members on press plate (01), split team and with second team member use (X), as many times as (B1) will glow.
Pull down (02) to open (03) and stay here with first member.
Move second member to (04) and stay.
Pull up (02) to open (05) and stay here with second member.
Move with second member from (04) to (06) and switch (06), now (07) is opened, stay here.
Move third member to (08) and stay here.
Move with fourth member to (X) and stay.
Use third member to turn (08), hold as long and (P2) will lower.
Switch to fourth member and use (X) to fire.
Move second member to (04)
Switch (02) with first member to free second (03)
Its easy, (P3) is down just fire with (X)
To light last sphere you need to light 3 torches (04)(09)(10) at same time and fire with (X).
So split four team members to this locations and fire.
Now you can go to next part of dungeon
Examine Statue for Codex Entry.
Loot Urn, fight Horror.
Go to Exit.
You will exit The Dead Hand in The Exalted Plains (42)