Here is the full list of all 10 Wandering Gem Jockeying achievements.
Reach level 23
Reach level 32
Reach level 45
Die 100 times
Beat the game
Beat the game in under 150 deaths and 120 minutes
Beat the game in under 75 deaths and 60 minutes
Beat the game in under 25 deaths and 45 minutes
Beat the game in under 10 deaths and 30 minutes
Beat the game with less than 3 deaths