Responses to 1391 and 1394.
1391
An easy way to get to Nigal's house is to fast travel to the west gate, turn west, and take the first door on your left.
1394
Start
Spoilers!
Your missing three.
1. A hero's call, I don't know if you didn't include this because it was obvious, but it's the main quest, you need to beat the final boss to finish it, and your quest log should have plenty of info about it.
2. The slayer, you can get this by talking to Buffy AKA hope after finishing all the other mainline graveyard quests, No Rest for the Wicked, Strange Bedfellows, and Ancient Evil, but only if you decided not to attack Liam in the shrine.
3. Haunted by the past, if you head to the fort door in the deepwood ruins, then head south down the road a bit, you will find an opening on your left, a few steps before the bend in the road. take it, and hang another left at your first opportunity. You should now be on an overgrown path, heading north. If you take the left turn, you will head to a clearing which I suggest you inspect carefully, and if you take the right turn and follow the path northward, than you will eventually come to a lake, as long as you stay on the path.
Spoilers!
End