To unlock the various features and items below, insert the corresponding code 
at the university's math classroom.

Artifact Detector  - VIKED7
Beep Beep          - VNF59Q
Character Treasure - VIES2R
Disarm Enemies     - VKRNS9
Disguises          - 4ID1N6
Fast Build         - V83SLO
Fast Dig           - 378RS6
Fast Fix           - FJ59WS
Fertilizer         - B1GW1F
Ice Rink           - 33GM7J
Parcel Detector    - VUT673
Poo Treasure       - WWQ1SA
Regenerate Hearts  - MDLP69
Secret Characters  - 3X44AA
Silhouettes        - 3HE85H
Super Scream       - VN3R7S
Super Slap         - 0P1TA5
Treasure x2        - VM4TS9
Treasure x4        - VLWEN3
Treasure x6        - V84RYS
Treasure x8        - A72E1M
Treasure x10       - VI3PS8
Treasure Magnet    - H86LA