Activating this trainer:

Press F1 at main menu.

Listen for 'Trainer Activated'.

Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options:

NumPad1: Infinite Unit & Tower Health

NumPad2: Infinite Core Health

NumPad3: Unlimited Resources

NumPad4: One Hit Kills

NumPad5: Unlimited Technology Points

NumPad6: Unlimited Upgrade Points

NumPad7: Unlock All Missions

Notes:

One Hit Kills: For this option to work you must have enabled health bars for enemies.

Unlimited Technology / Upgrade Points: While active spend a technology / upgrade point or switch tabs and you will have unlimited to spend.

Unlock All Missions: While active switch to mission selection and all maps are unlocked.