9 worlds connected by
Yggdrasil
There is a squirrel called ratatoskr that pits the eagle who sits atop the tree Yggdrasil and the dragon Nidhogg. The squirrel would put them against each other to try and. Get them to destroy the tree first.
9 rounds
Odd 1/3/5/7/9
1000m row
9 dips
Even 2/4/6/8
9 hang cleans
Stairs