Nali Castle

You start in a cavern with water to one side, kill a Gasbag hovering nearby and explore the nearby pond and collect an ASMD, the proceed to the Nali Castle itself.

A lone Krall stands outside the castle, kill it and collect the Shield Belt that he drops. Inside the castle is a room with two more Krall on elevated platforms. This room features exits to the left and right at floor level, plus a red carpeted ramp leading up to another set of exits. After killing the Krall, go through the lower right exit. Drop down through the hole in the floor and locate the Chapel. Kill the pair of Gasbags and Skaarj and approach the open book on the altar to press a button set into the bookstand that opens a gate elsewhere in the castle. Return to the room with the red carpet via the Dining Room which features a long table & several bookshelves. Press the book protruding to make another bookshelf swivel. This reveal two Krall, kill them and re-trigger the bookshelf to get a Super Health Pack behind it.

Back in the original room, take the upper left corridor, it leads past a pair of gates you opened earlier. Upstairs find your way out onto the castle battlements, kill a pair of Brutes that attack and go up a big stone ramp nearby to an enclosed area with a Skaarj, kill it and continue inside to a lift leading to a massive staircase. Climb the staircase, there is a short lift at the top leading to a chamber containing a giant Gasbag, kill it by remaining at the top of the stairwell and ducking back and forth, it can’t go down the stairwell and you’ll be able to shoot it relatively easily.

Return all the way to the room with the Red Carpet, take the lower right exit and fall through the hole in the floor so you’re close to the chapel. Near the chapel is a small spiral staircase leading down, take it to a basement area packed with Krall, don’t enter this room all the way, fight and retreat until you kill all of the Krall. Now enter the room and drop down to the lower half of it, from there drop down again into a short hallway with several door, go through one of the closet doors, not the one at the end of the hall, and you’ll emerge in an antechamber.

This room features a huge blue torch and a pair of Skaarj, after killing them press a button in the centre of the room to open a large door, go through it to a T-junction, take either corridor to a torture chamber. Kill the Skaarj there and try not to get cut by the pendulum or guillotine. The cells to either side can be opened by pressing levers in dark areas on the opposite walls. Continue through the chamber and through a hallway filled with cages suspended over lava, keep going and the next level will load.