Here is the full list of all 25 Tamashii achievements worth 1,000 gamerscore. It takes around 3-4 hours to unlock all of the achievements on Xbox One.
Enter the corrupted temple
Enter on the Assiah lair
Get the Fire stone
Enter on the Atziluth lair
Enter on the Beriah lair
Enter on the Yetzirah lair
Get the Earth stone
Get the wind stone
Enter in the Kether lair
Get the Water stone
Find the hanging man
Find your first secret quote from "VK"
Find the secret room
Find the secret code
Survive against the secret Guardian
Is this star "unreachable"?
Watch a livestream
Close all windows
Achieve more than 1500 points on Assiah
Achieve more than 1000 points on Atziluth
Achieve more than 1500 points on Beriah
Achieve more than 1500 point on Yetzirah
Achieve more than 666 points on Kether