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:

NumPad3: Unlimited Sprint

Trainer Options:

NumPad1: Unlimited Health
NumPad2: No Bleeding
NumPad3: Unlimited Sprint
NumPad4: Unlimited Max Ammo
NumPad5: No Reload
NumPad6: Unlimited Medical Consumables
NumPad7: Unlimited Projectile and Trap Consumables
NumPad8: Super Max Weight
NumPad9: Easy Craft
Multiply: Easy Infantry Kills
Add: Infantry Stealth Mode
Separator: All Damage In Game Off
Subtract: Unlimited Wanzer Ammo
Decimal: No Wanzer Weapon Overheat

Notes:

Save often!  Note that some scripted events, you may have to turn options off and start again from checkpoint (i.e. go back to TITLE SCREEN then click CONTINUE).

Unlimited Health:
Toggle on and most things cannot kill you.

No Bleeding:
Toggle on and any bleeding that starts is instanty healed.

Unlimited Sprint:
Toggle on and some characters that can sprint faster with double SHIFT press can run indefinitely.

Unlimited Max Ammo:
Toggle on and if you pick up ammo, you have the max that you can carry for that weapon.

No Reload:
Toggle on and you can fire most weapons without reloading.

Unlimited Medical Consumables:
Toggle on and when you use a medical consumable, the count will not drop.

Unlimited Projectile and Trap Consumables:
Toggle on and when you use a projectile or trap consumable, the count will not drop.

Super Max Weight:
Toggle on and when you go to pick up items, you will see that your max inventory weight has increased.

Easy Craft:
Toggle on and most craftable items show up and you can craft them, even if you do not have the materials.

Easy Infantry Kills:
Toggle on and most enemies on foot and smaller bots can be killed instantly.  Some scripted events may require that you turn this off.

Infantry Stealth Mode:
Toggle on and most human infantry units have a harder time seeing you or reacting to you.  This is NOT invisible, and may not always work.  Works best if you leave on BEFORE entering missions and BEFORE you encounter enemies.  Helps with missions that you have to get around with less detection and/or escorting survivors.

All Damage In Game Off:
This removes ALL damage in the game, including the damage that YOU cause, so keep in mind that if this is on, YOU cannot harm anything.  Most useful for escorting survivors OR missions where you have to protect something for a certain distance or time.  Toggle back OFF when you want to be able to kill things.

Unlimited Wanzer Ammo:
Toggle on and active Wanzer weapon systems have unlimited ammo.

No Wanzer Weapon Overheat:
Toggle on and active Wanzer systems that shoot and overheat will not overheat.