Open the console and type "sv_cheats 1". This will activate the cheats.
Now open the console again and take your pick from the below
| CHEATS | |
| god | No damage |
| buddha | Never die |
| infinate_aux_power | Infinate HEV power |
| impulse 101 | All weapons and ammo |
| npc_kill | Kill all npc's in the area |
| notarget | Enimies don't attack |
| noclip | Walk through walls |
| ch_createjeep | Spawn a scout car |
| ch_createairboat | Spawn an airboat |
| impulse 102 | Skulls |
| WEAPONS Type "give" and ... |
| weapon_ar1 |
| weapon_ar2 |
| weapon_bugbait |
| weapon_cguard |
| weapon_molotov |
| weapon_manhack |
| weapon_immolator |
| weapon_irifle |
| weapon_crowbar |
| weapon_extinguisher |
| weapon_flaregun |
| weapon_frag |
| weapon_gauss |
| weapon_alyxgun |
| weapon_hopwire |
| weapon_iceaxe |
| weapon_physcannon |
| weapon_physgun |
| weapon_pistol |
| weapon_rpg |
| weapon_shotgun |
| weapon_smg1 |
| weapon_smg2 |
| weapon_stickylauncher |
| weapon_stunstick |
| weapon_brickbat |
| weapon_sniperrifle |
| weapon_rollerwand |
| weapon_slam |
| weapon_hmg1 |
| weapon_cubemap |
| weapon_binoculars |
| weapon_ml |
| ITEMS Type "give" and ... |
| item_healthkit |
| item_healthvial |
| item_box_buckshot |
| item_box_mrounds |
| item_box_sniper_rounds |
| item_box_srounds |
| item_battery |
| item_suit |
| item_ml_grenade |
| item_ar2_grenade |
| DEVELOPER CODES | Type "give" and ... |
| mat_wireframe1 | Wire frame models |
| vcollide_wireframe 1 | Physics wireframe |
| showtriggers_toggle | Game triggers |
| mat_normalmaps 1 | Normal maps |
| mat_normals | Surface amterials |
| mat_fastnobump 0 | Bump mapping |
| Note: Above "letter" space "number" may not need the space. | |