Spider

Become a Flea- To become a flea, pause the game and press Triangle, Square, Circle, Triangle. Note that you cannot shoot web strands in this form. To turn back into a spider, just enter the cheat again.

Refill all weapons and health:

Triangle,X,X,X,circle,X,square,triangle,X,triangle,circle

Laboratory
Lab floor: 1FMLC 939GP R8F3B f7KT1
Sinks: CHMLC 939GP R8F3L WGTS3
Lab Top: 86MLC 939GP R8F3V F!5S4
*70's Room: FW1MC939GP R8F3B F7KT1

Factory -
Boxes: FW1MC 939GP R8f36 DTTS3
Conveyors: BSRMC 939GP R8F3VTKKT1
Machine Room: WDRQC 939GP R8F3L M8S95
*Tubes: 8WV5L 939GP R8F36 DTTS3
Mechanical Arm Boss: 8WV5L 939GP R8F3G 1QJB4

City -
Down the street: 9WV5L 939GP r8F3L RT6S4
Side of Building: 6SXXS 939GP R8F3L RT6S4
Park: W9PNT 839GP R8F3B 9LVS3
*Under the street: N7KB3 Y19GP $8F3G GK4TS
Along the Street: N7KB3 Y19GP R8F3G GK4TS

Museum
Display Cases: P7KB3 Y19GP R8F3B PFGC3
Volcano: G7KB3 Y11GP R8F3B PFGC3
Dinosaur Bones: H7KB3 Y1QFP R8F3Q XSDS4
Model City: J7KB3 Y1GWP R8F31 766D1
*Temple: K7Kb3 Y1B15 S8F3Q XSDS4
Museum Boss: K7KB3 Y1B15 S8F3B TqBB4

Sewer:
The Wells: V7KB3 Y1B15 S8F3Q s7QC1
Along the Sewer: W7KB3 Y1VBV P8F3L C1M95
Food Carton: X7KB3 Y1VLN 7BF31 CH1C3
Up the Well: Y7KB3 Y1VV1 6QF3Q S7QC1
*Ryan's World: Q7KB3 Y1LDR TQD3V KCDT1

Evil Lab -
Circuit Boards: Q7KB3 Y1LDR TQD33l CQSR3
Lab Toip: R7KB3 Y118H 56T1W TY4R4
Hard Drives: S7KB3 Y118H 56T1T CQSR3
*Brian's Folly: T7KB3 Y118H 56T1F NY4R4
On the Ceiling: T7KB3 Y118H 56T1t C4LD1
*Kip's Bonus: 68KB3 Y118H 56T15 1P6C4
Brain Boss: 68KB3 Y118H 56T1T MVM35