Danjuro has created a cunning new custom map which, as well as having the most outrageous pun-based level names, manages to make use of all the major game mechanics. There are some proper head-scratchers in there! Once you get all 8 basic keys, download PhilosOffer and have a go!
http://steamcommunity.com/sharedfiles/filedetails/?id=632577909
http://steamcommunity.com/sharedfiles/filedetails/?id=632577748
http://steamcommunity.com/sharedfiles/filedetails/?id=632577488
josh