Here is the full list of all 8 Pool Nation VR achievements.
Score a bullseye (50 points) in darts.
Win any match in the game.
Reach 150 experience points.
Win any type of online match.
Beat one of the hard AI players in a game.
Win 10 online matches of any game type
Play 100 matches against the AI or online
Play a 1000 matches against the AI or online