Not bad, the title "Dungeon World" make me think of the D20 Hardcovers by that name (with the Larry Elmore covers). I have the first two.
The quality of that adventure would depend heavily on the GM. If it was run like Gary Gygax allegedly ran Tomb Of Horrors it could be fun. If the PCs were forced to do things in the obvious fashion, it's mostly a random PC shredding device.
Tomb Of Horrors basically having been an adventure that combat prowess was a non-factor with so it was intended to kill uber- characters who were strong due to nothing but outright statistics, guided by very linear thought.
According to the "Return To The Tomb Of Horrors" boxed set, the thing was easily beaten by one of EGG's original gamers (playing Robilar) who simply showed up with an army of orcs (minions of a high level character) and used them to Kamikaze all the traps and tricks and then pretty much walked in, brushed all of Acerak's loot into a Bag Of Holding (surving only a couple of combat roads for that) and left. The same basic feat having been performed by people using monster summoning spells numerous time (mentioned outside of the boxed set) and the same strategy seems like it would work here for a lot of this adventure (at high levels summoning kobolds with Monster Summoning I is a great way to test treasure in obvious places or find traps... by having them walk ahead of the party or whatever. They're evil, so who cares?).
No relevence to this, but in a seperate report (I think from Dragon Magazine) Tomb Of Horrors can apparently be beaten within 6 combat rounds, maybe less. It's protection against ethreal/astral travel being that X number of demons appearing every so often. However the actual tomb isn't THAT big and Acerak is both visible and vulnerable from the Ethreal plane, pronouncing Holy Word from the Ethereal being an instant kill apparently. So pretty much if you've got a whole party of that level, the "most efficient" way is simply to cast Ethrealness, walk down to Acerak's room, one shot him, and then return to the Prime Material and polish off whatever demons showed up, if your like a 15th level party that is still relatively fresh they are going to get pwned pretty hard. Then you just grab the loot, and leave.