Tim Schafer's Grim Fandango is, hand's down, one of the best adventures games ever and most probably the second best Lucasarts offering to date. Then again you know that. What you are looking for is a little bit of help, isn't it. Of course it is. Well, here is the excellent selection of UHS hints for Grim Fandango, though you could also go for a full walkthrough or even a pretty glorious video playthrough.