The Shoe is both the worst and best melee weapon in the game. It's power is worse then the clipboard and better then the pan.
In order to obtain it, you must go through several steps.
Go to the level Down The Spider Hole. Open the door near the vegetable garden (it requires three objectives completed), get the objective, and find the nine weird mechanical objects around the map. Insert them in the slots, then punch in this code (in order from top right to bottom left):
Vaccuum Cleaner, Silencer, Frying Pan, Spider Cheese Bag, Shuriken, Flare Gun, Spider Sensor, Molotov Cocktail, Energy Drink.
This will be outdated. If you are viewing after this has been patched (a week or two after this is uploaded, possibly), you must use the blacklight (obtained from the final level, Consequences, in your partners old office (requires some Arachno-Gauntlets)), then go throughout every level and gain the nine digit code.
This original code was found by the community as part of a community event. In order for this to work, every save had different symbols for the code in every level, which instead of showing the symbol needed, showed a symbol NOT needed. This meant that the community had to gather together to show what they had for each symbol, to rule out different symbols. This was done in four hours.
Also, thanks for Casey Donnellan for creating this awesome game. I have to play with one earphone in, it's that good!