Activating this trainer
If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Promo Options
NumPad6: Freeze Police Arrival Timer

Trainer Options
# Player 
     NumPad1: Unlimited Health
     NumPad2: Unlimited Stamina

# Inventory 
     NumPad3: Unlimited Weight

# Weapons 
     NumPad4: Unlimited Ammo
     NumPad5: No Reload

# Police 
     NumPad6: Freeze Police Arrival Timer
     NumPad7: Reset Police Wanted Status Stars

# Items 
     NumPad8: Duplicate Dropped Items / Unlimited Use/Consume
     NumPad9: Unlimited Break In Item Usages

# Game 
     Multiply: Game Speed

Editor Options
# Currency 
     Player Money

# Player Progression 
     Player Upgrades Points

Notes
EDITOR OPTIONS

Enter the inventory or upgrades screen to see the totals fill in the editor.  Modify the value, then press TAB to lock it in.

Freeze Police Arrival Timer:
Toggle on and some timers that show when the police will arrive can be frozen.