The Darkness

At the first long spike-pit, look for Two Objects in a background alcove. You'll find a Material floating above shortly after--leap to it from the dog's back as it climbs the nearby ramp. After passing underneath the poisonous tunnel, look for a Decoration right by its exit. Now ride the dog down the hall, jumping to grab a sticker above each of the three pillars. After flipping the switch to give the dog a lift to your level, ride him to the left and leap to a ledge for a Sticker and Object.

Check behind the candles for goodies!

After the dog gets kidnapped, you'll spot an item embedded in the wall as you ride the skull-lifts--simply hold right toward the wall as you pass the Decoration to find a secret passage right to it. When at the top one, jump from its jaw as it nears the top, then wrap around onto its skull (being careful not to touch the teeth in his upper-jaw) to find an Object on top. From the top of the skull, make a leap of faith to the left and grab hold of a hanging skull to swing across the gap to find an Audio Object and Key.

Just past the next checkpoint, look for three Decoration total on either side of the first two candles, hidden behind the column. Just beyond, grab the object in the bat hallway. You'll find a Object as you use the hanging skull to glide over a spike-pit, then another Object just in front of a candle, above another spike pit. Check in the foreground of the staircase (just before the yellow skull block) for 3 Stickers. Now pull that yellow skull-block aside to find an Object hidden behind it.

Beyond the next checkpoint, snatch the Material floating above the rising/sinking spike trap. After encountering the groom, you'll find a pair of rising/lowering skulls in the spike pit beyond. Grab hold of one and ride it to the ledge above, where you'll find another challenge requiring 2-Sack People.

After dragging the groom past the room with the switch and spring, use him to reach a couple of alcoves in the background containing two Stickers each (4 Total). At the next skull-lift shaft (after ditching the groom), hop into the background at the top of the first lift and head right to reach the Object hidden inside the wall. Afterward, enter a tunnel to the top-left of the shaft and ride the hanging skull within to an area above where you'll find five sticker Spots in the background! Plant a Pixel Skull on each to reveal 2 Costumes!