During gameplay, press ~ to drop the console menu. Type sv_cheats 1 and restart. Then enter the following cheats in the console:

• God Mode: god
• Fly Mode: fly
• No Clipping: noclip
• Invisible to Enemies: notarget
• Get Weapons: impulse 101
• Spawn Item: give
• Map List: maps *
• Kill Bots: bot_kill
• Restart Map: restart
• Change Map: changelevel
• Restart Round: sv_restartround 1

• Adjust Gravity: sv_gravity (#)
• Freeze Time: mp_freeztime (#)

Use with the "give" code:

• weapon_ak47
• weapon_aug
• weapon_awp
• weapon_deagle
• weapon_elite
• weapon_famas
• weapon_fiveseven
• weapon_g3sg1
• weapon_glock18
• weapon_m3
• weapon_m4a1
• weapon_mac10
• weapon_mp5navy
• weapon_p228
• weapon_p90
• weapon_scout
• weapon_sg550
• weapon_sg552
• weapon_tmp
• weapon_ump45
• weapon_usp
• weapon_xm1014