Press ~ to enter the console on the server machine and type sv_cheats 1 or sv_ 1, then change maps by typing changelevel dust (or any other map). Finally, activate the following cheats by entering the corresponding codes. Note: Some codes have been changed or removed with various patch updates for the game.
CHEAT FUNCTION - CHEAT CODE Arctic sniper rifle - give spaceweapon_awp Auto-aim with sniper rifle - sv_aim Adjust gravity - sv_gravity <-999 - 999999> Adjust wall and object density; default is 3600 - gl_zmax <0-9999> See and fire through walls and objects - gl_zmax 0 View other players' frags - cl_hidefrags 0 Faster forward motion - cl_forwardspeed 999 Faster backwards motion - cl_backspeed 999 Faster side motion - cl_sidespeed 999 Level select - changelevel Get indicated item - give Change skins - skin Auto-reload enabled - +reload Auto-reload disabled - -reload See things brightly without flashlight - lambert -1.01 SetC4 timer - mp_c4timer <1-100> Hyper auto-aim enabled - sv_clienttrace 9999 Hyper auto-aim disabled - sv_clienttrace 0000 Change crosshair color - adjust crosshair Disable the crosshair to enlarge when shooting - crosshair <1-5> Set freeze period at the start of rounds. Set to 0 to disable, default is 6 [NOTE 1] - mp_freezetime Set maximum length in minutes a round can last, default is 5 [NOTE 1] - mp_roundtime <3-15> Toggle friendly fire [NOTE 1] - mp_friendlyfire <0 or 1> Set minutes between map rotations, default is 0 [NOTE 1] - mp_timelimit Toggle footsteps, default is 1 [NOTE 1] - mp_footsteps <0 or 1> Toggle flashlight use, default is 1 [NOTE 1] - mp_flashlight <0 or 1> Set maximum minutes of buying time - mp_buytime Toggle crosshairs in observer mode, default is 1 - cl_observercrosshair <0 or 1> Reveal how much time is left on the map - timeleft Toggle map briefings after new levels load, default is 1 - dm <0 or 1> Toggle to see ghosts in observer mode, default is 0 - ghosts <0 or 1> Toggle auto-help hint messages, default is 1 - ah <0 or 1> Disable waypoint editing - waypoint off clip Enable waypoint editing - waypoint on clip All shots will hit, default is 1 - sv_clienttrace 999999999 No clipping mode; decreases gun accuracy and does not work with all maps - noclip $16,000 - impulse101 Whiten all surroundings at 800x600 resolution - r_lightmap 1 Show ping as numbers - -numericping Toggle graph - net_graph <0 or 1> List cheat commands, press [Page Up] or [Page Down] to scroll - cvarlist or cmdlist Unbind key command - unbind Restart game after one second - sv_restartround 1 Show last four kills of either team - hud_deathnoticetime 9999 Toggle blood thickening - gl_spriteblend <0-1> Unlimited spraying - decalfrequency 0 Shows information at bottom right - +graph Hide information at bottom right - -graph Refreshe time on the console - timerefresh Suicide - kill