Palace Noir - Stage 1
Start by heading right then up and you should find the fire gloves next to the staircase. Climb up and drop down to light the two torches. You should now be able to see the area so send the two other heroes to collect their items. Take everyone upstairs and have your archer stand in front of the unlit torch, while the hero with the gloves stands at the bottom of the stairs to the right. Shoot a fireball and then let an arrow loose as the flame passes in front of the archer to light the torch. After that, blow the archer and ire gloves guy across the gap and have the latter light the torches at the end. Finally, send the archer to light the last torch. The gateway should be open downstairs now.
Palace Noir - Stage 2
Have everyone step on the big switch to drop the key on the center platform. Send someone onto the moving platform on the left, while gust jar Link and the other guy head to the platform on the right. Blow the key onto the left platform so you can pick it up. Now, have everyone meet on the stationary platform to the right and throe gust jar Link onto the higher section. Form a duo totem with the key guy on top and blow him over with the gust jar. Step on the switch to get the platform moving. Use the key on the door, get the other two heroes over and continue on to the gateway.
Palace Noir - Stage 3
This one is simple. All you need to do is track down three keys to unlocks three layers of doors blocking access to the gateway. Kill the ghosts that have them, pick it up and run a for the door.
Palace Noir - Stage 4
This boss level starts with an encounter with some colored Poes. Get rid of them and a big one will appear. You will have to light the three torches in the area to slow the target down, then kill its flames with the gust jar. At this point, you must attack the gem on its necklace with your sword.