Door Combination: Hints were: to count letters, and that the code had something to do with the word Wade = 2314

W = 23rd letter of the alphabet
A = 1st letter of the alphabet
D = 4th letter of the alphabet

The panel opens:
1) collect a rotor handle
2) collect nut that drops out of pipe (nut looks like a strawberry)

Give nut to Chipmunk = collect chipmunk

Edit: Drag and drop the nut down the pipe just above the chipmunk.