1. A barrel.
2. This is where you start - by a dead man's body.
3. At the junction you'll meet a knight from Order of the Flaming Rose - Siegfried.
4. Barrels. Use Aard sign here to open up the passage.
5. If you let the Thug beat you in the dungeon, you'll see his body here. Search it to find a Rusty Sword.
6. Place of power.
9. A barrel.
12. A sack.
13. Search it to find Letter to Erick and a Key. If you read the letter, you'll know that somewhere in the sewers there's a hideout of an occult group, worshipping a Lionhead Spider.
14. Exit from the sewers. You'll get a key from Siegfried after defeating the Cockatrice.
15. Steel bars.
16. Steel bars and a place of power.
18. Place of power.
20. Lionhead Spider crypt (as described in chapter III - map M18). You'd better not try to enter it at the beginning of Chapter II. You'll need a good steel sword here.
21. Entrance to Con Artist's crypt.