I had no idea how to play "An Invitation to Dinner" so I decided to solo it at elite (as you do) with a lvl17 wizard. This entire quest is magnificent. I particularly enjoyed nuking strahd-painting though falling onto spinning blades as the floor collapsed was "bad faith" by strahd...he should have accespted his beating with more grace
Whilst completing the quests (including optionals of wiping out strahd's army) was fun...looking for the exit for 2 hours wasn't...until I was "inspired" to cast "detect hidden doors" and suddenly...it appeared
