Platform: Xbox Series X
Issue: The “Skirmisher” achievement is supposed to unlock when you have won 5 skirmishes. I have won 24, but the achievement has not unlocked and the progress is stuck at 80%, so it’s only detecting that I’ve won 4, as you can see here: -
You can see from the in-game challenge screen (bottom-right) that I have received the 20 gems for winning 5 skirmishes, so I’ve definitely fulfilled the requirements for the achievement: -
Other players have unlocked it, so it’s possible that the most recent update to the game broke it as I only started playing a few days ago and 1 game update has been released since then.