Here is the full list of all 8 Jubilee achievements.
Collect and bank every gem in the game.
Rescue all of the animals.
Collect all 5 secret pages.
Reach the ending through H.E.C.K.
Unlock Dax (by finding all the shrines).
Open the gateway to H.E.C.K.
Die 100 times.
Reach the ending through Skylantis.