I think people are a bit harsh on this game. Sure there are some minor story flaws and the navigation isn't incredibly intuitive, but the puzzles are relatively straight-forward and solvable. I could do without so much of the back-and-forth room to room but still moved along pretty well.
tried - but wasn't able to do this without the walkthrough. Too many random solutions and some things were a bit too difficult to find. Took me forever to find the grave. And bend the pipe with the Buddha? Seriously?
wow - hardest part of the game is failing it! :) You have to eliminate all means of progressing by killing both the worm and Milo before you have yellow access. This means killing Milo as soon as he gives you the bomb material and killing the worm with the bomb. If you return to Milo after killing the worm he will grant you yellow access.
These are not solutions, just tips:
Lift weights first to build strength and stamina which will make other tasks easier. Greed: Fire any workers without green on both sides first - then take your time and only select workers with green on both sides. Envy: This will take several times. Sometimes the windows change quickly, occasionally they change slowly. Ignore the envymeter (this will only distract you) focus on moving quickly and staying on the lit windows. Pride: If you're having problems with the dance contest, simply mash all buttons - you'll get credit for hitting the correct one :) Lust: Give the redhead tequila, absinthe, the leaf and condom... then lots more tequila...
Everything was fairly intuitive - managed to figure it all out with the exception of the way I found the numbers. This was difficult simply because the interaction changed in an unexpected way. (wow - try complaining without spoilers :)
 "Z-Rox"){kind=icon}
 "I Remain"){kind=icon}
 "Tyrant"){kind=icon}
 "Terrascape"){kind=icon}
 "They Took Our Candy"){kind=icon}
 "ButtonHunt 3"){kind=icon}
 "Death vs Monstars 2"){kind=icon}
 "Morningstar"){kind=icon}
 "A Small Favor"){kind=icon}
 "Reincarnation: Riley's Out Again"){kind=icon}
 "bit Dungeon"){kind=icon}
 "Reincarnation: ADDO"){kind=icon}
 "The Majesty of Colors"){kind=icon}
 "Zombie Minesweeper"){kind=icon}
 "The Several Journeys of Reemus: Chapter 1"){kind=icon}
 "Seven Deadly Sins"){kind=icon}
 "Infectonator 2"){kind=icon}
 "Take a Walk"){kind=icon}
 "Deep Sleep"){kind=icon}