

Going forward will trigger the Giant Crabs to rise up from the ground, one in front but also one behind the player. From here you can also see the lever below the lit statue kept behind the rusted bars, the way to get behind the bars is elsewhere. In the sewer level there are many small crabs that are non-hostile, they will drop crab eggs when killed. Running past this area will lead you to a corner room with another rolling skeleton and a ladder to go down to the sewer level. Heading forward will bring you to the room with multiple guillotines, as well as 2 skeleton archers. Inside you will find 2 skeleton enemies on the left side, on the body leaning against the tombstone in the room you will find the Rosus' Axe. The first left on this tunnel is the room sealed by an imp statue, use a Stonesword Key here to open the room. Again, moving up the staircase can help with the fight to bring them into a wider fighting area or help with kiting them. At the bottom of these stairs are 2 more skeletons, one at the crossroad and one further down the tunnel who will start rolling towards you rapidly once they spot you. On the left is the way forward down a short flight of stairs. These doors will open when you use the lever found at the end of the catacombs, the doors lead to the final boss fight of the catacombs. Once at the bottom of the stairs you will find the locked doors of the catacombs, flanked by 2 statues. You can watch how this skeleton moves and attacks to learn what to expect from them later on, move back up the stairs to make the fight more manageable. Going down the stairs from the Site of Grace there will be one such skeleton half way down.
Some of the skeletons are also special in that they cannot be killed by themselves, instead, one has to defeat the nearby necromancer which kills the skeletons automatically and permanently (until you rest or die). Players should be careful when fighting these enemies as they can be very fast to close the gap and attack. Many of the skeletons that are found in this Catacombs exhibit a strange behavior of rolling at the player, and attack quite rapidly. This catacombs even has 2 bosses found in different rooms and with different loot, the Black Knife Assassin fight is not necessary for the player to advance through to find the lever that opens the doors to the Cemetery Shade fight. The sewers are infested by crabs, with 2 giant crabs waiting for unsuspecting prey. The Black Knife Catacombs features many skeleton enemies and multiple moving guillotines throughout its chambers.
