Extinction V3.5.4:
Money (4 Bytes): 1444D2BD4, 146457588 (*256)
Skill points (4 Bytes): 1444D2BF0, 1464575A4 (*256)
Rapid fire (4 Bytes): 1417149B0, 1443BA8D0, 1417149CC, 1443BA8EC (freeze the value of all addresses to 0)
Noclip (4 Bytes): 1443BDC10 (3= on, 0=off)
Speed (4 Bytes): 14037561C
Jump height (Float): 140820CA4
Timescale (Float): 144516294
X (Float): 1443BA63C
Y (Float): 1443BA640
Z (Float): 1443BA644
Aliens life (4 Bytes): 1441EDFDC,1441EDFDC+2f0,1441EDFDC-2f0*2,1441EDFDC-2f0*3,1441EDFDC-2f0*4, 1441EDCEC,1441EDCEC+2f0*4,1441EDCEC+2f0*5,1441EDCE C+2f0*6,1441EDCEC+2f0*7, 1441EE5BC
For the other players addresses you have to add 39A8 to the player 1 address (2F0 for the health)
example: noclip player 2= 1443BDC10+39A8, health player 2= 1441E9F3C+2F0