There are three achievements for this game that can only be won in online game play, but so few people play it the odds of ever getting them are virtually nil. If anyone wants to plan to boost, I think we could manage.
Plan:Play with 2 players only, head-to-head, where one player deliberately loses to the other, alternating so both players can boost the achievements. The "winning" player should probably choose either Geralt or Triss (Yarpen takes longer to get to winning conditions and Dandelion is usually better in longer games with more players). The losing player can play anyone.
Play to only a single quest, with the winning player focusing on the minimal amount necessary to solve their quest (e.g., ignore secondary objectives) and the losing player just wandering around trying not to gain VP (e.g., only doing movements and rest actions). (Note: the losing player can still boost some of the other achievements, such as collecting 1000 gold, red, purple, or blue leads across all games...these are achievable in offline mode, but will give those who haven't earned it yet something to do while losing).
A single game could be won in under 10 minutes (maybe as quick as 5 if you're a bit lucky).
It won't be quick. At 10 minutes per game, figure 3 to 3 1/2 hours for both players to get the first achievement, 6 to 7 hours for both to get the second, and maybe 15 hours for both players to get all three.
If anyone wants to do this, send me a message and we'll set up a boost time.