Remember to use strong style to fight Greater Mutants and fast style for any other type of enemy here. Steel sword helps you defeat mutants, while the mutated hounds are better fought with silver sword. Here we go...
1. Fireplace. Starting point if you're led by Yaevinn.
4. Closed door (open if you're led by Siegfried).
5. Catacomb entrance. Starting point if you're led by Triss.
6. Mutated knights.
7. Javed's lab.
8. Entrance. Starting point if you're led by Siegfried.
9. If you're led by Siegfried, this passage is blocked.