Talisman: Digital Edition

Theoretically, all you have to do is win 5 games. Unfortunately, this seems to be buggy.

I've been stuck at 4 wins / 80% completion for two week now. I have over 20 games won but this achievement refuses to unlock.

Update:

Well, as it turns out, according to the thread here:

Achievements Losing Tracking

The game is bugged. Whenever you quit the game, as in start a different game, choose to quit the game form the Home Screen, or due to a crash, your progress in all of the cumulative achievements resets. So, to gain this achievement, you must win 5 games WITHOUT relaunching the game for any reason. If you got to 4 games won and then played a different game, well, tough luck, you need to win 5 again.

The achievement tracker will not show that this has occurred, so if you have made progress on an achievement, you will not see the tracker move until you have surpassed your previous level of progress.

Here's hoping a bug fix is in the works.