Here is the full list of all 13 Backgammon Blitz achievements.
Win an online game against a player with a higher rank
Win 3 online games in a row
Use every Power-Up at least once
Use 3 different Power-Ups in a single game
Play 5 local multiplayer games
Win a game on all 4 Backgammon sets
Re-Double the stakes of a game
Win by a Backgammon
Roll a double of each number
Complete all tutorials
Block all 6 of the home board points
Win by a Gammon
Take an opponent's nip