It takes place in the crypts of The Wedding, and is dark after all, hence the title.
When walking through The Darkness, you must be wary of spikes. The only dangers are gas and getting squished. The objective is to find Don Lu. First you must find Don Lu's Dog, who, once you clear the path, will lead you to Don Lu. Once you find Don Lu, you must drag him to the finish. But beware! The Collector is about!
- As you rise up with the last of the skull elevators, jump left and grab the hanging skull, then swing left for two hidden items.
- As you go up the second set of skull elevators near the end, while the second elevator's mouth is at its lowest and you're standing on it, jump backwards and you should be able to collect a special bubble prize.
- On the second set of skull elevators, go left from the last elevator (over the head of the second elevator) and there will be a walkway leading to a hanging skull for you to grab. This takes you up to an area where you can put the pixel skull sticker on the Cardboard Mask-wearing Meerkats, it can be used to get two items.
- This level may be based on Mictlan (the underworld of Aztec mythology). One argument is that there are many statues of Mictlantecuhtli (was a god of the dead and the king of Mictlan). Another is that you are guided by Don Lu's Dog, a reference to Itzcuintli (the guide of the deads).