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: Change Money By 5000
NumPad2: Change Intel By 500
NumPad3: Change Primary Skill Level By 1
NumPad4: Change Secondary Skill Level By 1
NumPad5: Infinite Fuel
NumPad6: Infinite Oxygen
NumPad7: Infinite Health (Airplane)
NumPad8: Infinite Health (Crewmembers)
NumPad9: One Hit Kills
NumPad0: Unlimited Ammo
NumPad/: Unlimited Belts
NumPad*: Perfect Temperature
NumPad-: Infinite Slowdown Time

Editor Options:
Selected Crew Member: Age
Selected Crew Member: Defense Boost
Selected Crew Member: Temperature Resist Boost
Selected Crew Member: Oxygen Time Boost
Selected Crew Member: Movement Speed Multiplier
Selected Crew Member: Survival Land Boost
Selected Crew Member: Survival Sea Boost
Selected Crew Member: Primary Skill -> Type
Selected Crew Member: Primary Skill -> Level
Selected Crew Member: Primary Skill -> XP
Selected Crew Member: Secondary Skill -> Type
Selected Crew Member: Secondary Skill -> Level
Selected Crew Member: Secondary Skill -> XP

Notes:
Money / Intel: When your money is shown press hotkey to add more.

Selected Crew Member: Click on "Crew Gear" and then click on the crew remember you wish to edit. After you made changes you just switch to another and back to the crew member to see values have changed.

Infinite Health: While active you will not receive damage.

One Hit Kills: While active enemies can be killed by a single hit. May not work on all enemies.