By 
When in-game, press and hold “Left Shift” and “Right Click” to enter cheat mode. After that, input these codes:
X, X, F, E, [Tab], F All Psi powers
[Tab], click Mouse Wheel, [Tab], E, X, E All Psi powers upgraded
Click Mouse Wheel, [Space], [Tab], [Tab], F, X Full ammunition.
[Space], click Mouse Wheel twice, E, F, Left Mouse Button Full arrowheads.
[Tab], E, E, X, [Space], click Mouse Wheel Full lives.
Click Mouse Wheel, X, E, E, [Tab], F Global items except for Psi Colorizer and Dream Fluffs.
