Another question and answer to add:
My Driftwood-achievement ''Island Paradise'' isn't unlocking.
There are two possibilities: first one is that you haven't completed all quests required. There are four:
- Repair the bridge
- Kill all hobbes scattered around the islands
- Get a carpenter from Silverpines to go to Driftwood
- Escort a man from Bowerstone Market to Driftwood
If you're sure you did all this and you haven't unlocked the achievement yet, try sleeping somewhere. Otherwise, keep playing, it will unlock eventually