At the console on the server machine, type sv_cheats 1 to enable the following "Codes":

Arctic sniper rifle - givespaceweapon_awp
Auto-aim with sniper rifle - sv_aim
Adjust gravity - sv_gravity <-999 - 999999>
See and fire through walls and objects, default is 3600 - gl_zmax <0-9999>
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 <map name>
Weapon select - give <weapon name>
Auto-reload enabled - +reload
Auto-reload disabled - -reload
See things brightly without flashlight - lambert -1.0001
SetC4 timer - mp_c4timer <1-100>
Hyper auto-aim enabled - sv_clienttrace 9999
Hyper auto-aim disabled - sv_clienttrace 0000
$16,000 - impulse101

Use one of the following entries with the 'give' code to get the corresponding weapon.

AK-47 - weapon_ak47
Benneli xm1014 - weapon_xm1014
C4 - weapon_c4
Colt M4a1 carbine - weapon_m4a1
Commando - weapon_sg552
Fn P90 - weapon_p90
Glock 18 pistol - weapon_glock18
HE grenade - weapon_hegrenade
M3 super shotgun - weapon_m3
MAC-10 - weapon_mac 10
MP5 - weapon_mp5navy
Para - weapon_m249
Scout - weapon_scout
SIG p228 - weapon_p228
Steyr Aug - weapon_aug
Desert eagle - weapon_deagle
Usp.45 pistol - weapon_usp

Bind Keys
To activate codes easier, bind them to keys. For example, type: bind v "impulse 101" at the console window to bind the "$16,000" code to the "V" key.

Ninety bullets for Usp.45 Pistol
Buy a MAC-10 and all its bullets, then buy a Usp.45 Pistol.

120 bullets for Glock pistol
Buy a MP5 and all its bullets, then buy a Glock Pistol. Note: If you already have it, you do not have to buy another one.

98 bullets for Scout
Buy a Scout, shoot one bullet and reload. Then, buy the bullets again.

120 bullets for Steyer TMP
Buy a MP5 and all its bullets, then buy a TMP.