Unverified. You must pause the game and hold down the L or the R TRIGGER. This will access the phone. Select DIAL, then enter and CALL:

• Ambulace (Restores Health) 911
• Brown Baggers 555-3765
• Eagleline Yellow (Taxi Service)(555) 018-0174
• Eye for an Eye Voodoo 555-5966
• Give money #66639
• God's Wrath (lightning strikes randomly) #10
• Grounds for Divorce 555-9473
• Infinite Ammo #AMMO
• Infinite Sprint #SPRINT
• Legal Lee's 555-9467
• Lik-a-Chick 555-3863
• On the Fence (Pawn Shop) 555-7296
• On The Rag Clothing 555-5926
• Rim Jobs 555-3493
• Stocks 555-2626
• Suicide Hotline 1-555-ITS-OVER
• The Dead Cow 555-6238
• TNA Taxi Service 555-455-8008
• GameStop T-Shirt #42637867

#Rocket ... Activates RPG cheat
#AS12Riot ... Activates Riotgun cheat
#Krukov ... Activates Krukov cheat
#12Gauge ... Activates 12gauge cheat
#Tombstone ... Activates Tombstone cheat
#T3KUrban ... Activates Urban cheat
#GDHC50 ... Activates GDHC 50 cheat
#Shepherd ... Activates .44 Shepherd cheat
#NR4 ... Activates NR4 cheat
#Pipebomb ... Activates Pipe Bomb cheat
#Vice9 ... Activates Vice9 cheat
#Knife ... Activates Knife cheat
#Molotov ... Activates Molotov Cocktail cheat
#Grenade ... Activates Hand Grenades cheat
911 ... Slow life regeneration (?)
#42637867 ... Gamestop/EBGames t-shirt (costume)
555 018 0174 ... Access Eagleline Yellow (Taxi Service)
555 455 8008 ... Access TNA Taxi Service
555 5966 ... Access Eye for an Eye Voodoo
555 7296 ... Access On the Fence (Pawn Shop)
555 3863 ... Access Lik-a-Chick
555 6238 ... Access The Dead Cow
555 3493 ... Access Rim Jobs
555 9467 ... Access Legal Lee's
555 9473 ... Access Grounds for Divorce
555 5926 ... Access On The Rag Clothing
#SPRINT ... Activates Infinite Sprint
#66639 ... Activates money accruement
#AQUA ... Activates and spawns an Aqua car
#AMMO ... Activates infinite ammo
#10 ... Activates random lightning strikes
555 3765 ... Access Brown Baggers
1 555 ITS OVER ... Access Suicide Hotline
555 2626 ... Access Stocks

Note that the in-game cheats (i.e., Pipe Bomb cheat) must be toggled on the in-game cheat menu. Toggling cheats on will remove the possibility of earning gamertag achievements. Simply toggle off cheats and reboot the game to continue earning achievements.

Submitted by SuperTool
Corrections by BPMorris2

You must finish all 3 Hitman Activities.

I have noticed that sometimes when you enter a gun shop from the back, the people drop the gun's they are holding and leave. Leaving the guns on the ground. I found this works best when there are 2 or more people in the shop. Another way is to go into a store and kill the people with soemthing else, take the guns and run off the cops if needed.

Submitted by cskid621

If you enter Rim Job's in the starting area, make the shop keeper set off the alarm by firing your gun. The police will come to take you away but the uniforms apparently can't enter the garage.

This is great (unless it is patched). You can hide on the corners and pick off the police as much as you like and they can't touch you. The only time you are in danger will be if you're in the open. Once your health gets low, just duck back behind the corner and heal up.

This is a cheap and easy way to get weapons and ammo for free. After killing a few cops, wait for a break in the action and then dash out and scoop up the weapons and cash they've left behind. I managed to max out on pistol rounds, shotgun shells and SWAT rifle ammo in almost no time at all. Once you've had enough you can run into the office and wait out your wanted timer until the cops leave. How's that for street smarts?

Submitted by bigbalduglyTerraphon

You have to fall into or Under moving cars, not just fall to the ground unless you only want a few hundred dollars.

One of the key things to look for after the first few levels is the freeway. The UI leads you close to an overpass on a lot of the 100k levels.

Jump off the overpass and run at a car or truck. As soon as you are about to make contact, dive. If you do it right, it will not look like you dove at all and you will rake up 30K each try.

Also on some of the street ones, I park my car to block one land to force the traffic into the center. Here you can run straight at a car and dive directly into it. I got huge points even diving into cars not going fast.

Also, you can get a police car before starting the Insurance Fraud activity. Having a civic vehicle involved in the accident is an automatic multiplier, and it's very durable and goes pretty fast, so it's not too tough to launch through the windshield as you hit on-coming traffic. With witnesses and hitting another on-coming car as you fly out giving you air bonuses and distance bonuses, it's possible to clear level 8 with just one hit.

Submitted by Deathjester_PFC and BullwinkleJ