Various cheats

changelevel (levelname)      Change Level 
impulse101                   $16,000 
givespaceweapon_awp          Arctic Sniper Rifle 
sv_gravity #                 Adjust Gravity (-999 to 999999) 
sv_aim                       Auto-Aim Only With Sniper Rifle 
give weapon_(weapon name)    Get (weapon name) 
gl_zmax 0                    See and Shoot Through Walls 
gl_zmax 3600                 Sets Walls Back to Normal 
cl_forwardspeed 999          Adds to the Speed of the Forward Motion
cl_backspeed 999             Adds to the Speed of the Back Motion
cl_sidespeed 999             Adds to the Speed of the Side Motions