Here is the full list of all 20 Pool Nation achievements.
Reach 12 minutes in Endurance
50 ball streak in Endurance
Clear the table in Endurance
Reach 8 minutes in Endurance
Won 8 Ball Tour
Win One Game In All Rule Sets
Reach 1500000 Points
30 Ball Streak in Endurance
Use a Flashback
Won 9 Ball Tour
Reach 4 minutes in Endurance
Earn 10000 points in one skill shot
Win First Bonus Match in Tour
Win Online Match
Earn 5000 points in one skill shot
First Win Against AI in Versus
Win First Star in Tour
Obtained all 298 stars
Win Online Tournament
Reach 20 minutes in Endurance