1) You have to find the hidden villagers (search for a trap door in the south-west of the village with a rock on it)...
2) There are three levers in the entrance area of the Knight's tomb north-east of Hunter's Edge.
3) You need a bucket of water for the whiskey.
4) The quest with the orcs will be continued once you've been in the Knight's tomb.
5) There is no quest for the spider queen.