Here is the full list of all 21 Solitaire Forever II achievements.
Win any game.
Score at least 6,000 points in any 1-deck game.
Win 7 different games.
Win 50 different games.
Win 100 different games.
Win 200 different games.
Win 300 different games.
Win any game in Pro mode.
Win 7 different games in Pro mode.
Score at least 6,500 points in any 1-deck game.
Score at least 7,000 points in any 1-deck game.
Score at least 9,600 points in any 2-deck game.
Score at least 10,400 points in any 2-deck game.
Score at least 11,200 points in any 2-deck game.
Earn a total best score of at least 50,000 points.
Earn a total best score of at least 55,000 points.
Earn a total best score of at least 500,000 points.
Earn a total best score of at least 1,000,000 points.
Earn a total best score of at least 1,500,000 points.
Earn a total best score of at least 2,000,000 points.
Earn a total best score of at least 2,500,000 points.