Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
Numpad 1: Unlimited Intel Credits
Numpad 2: Unlimited Ammo and Items
Numpad 3: No Alarms
Numpad 4: No Unconcious
Numpad 5: Unlimited Oxygen
Numpad 6: No Pass Out
Numpad 1: Unlimited Intel Credits - toggle on then enter one of the shops on the Main ship. You can buy anything. Toggle off when not needed.
Numpad 2: Unlimited Ammo and Items - once you enter the ship, toggle this on and most weapons and items will have plenty. You can toggle back off until needed.
Numpad 3: No Alarms - toggle on before entering enemy ship, and while on it the enemy has trouble setting of the alarm and starting the CAPTURE timer.
Numpad 4: No Unconcious - toggle this on and any damage you take that would knock you unconsious is reset by clicking your mouse. In most cases, you are effectively in GOD MODE.
Numpad 5: Unlimited Oxygen - toggle this on and the losing Oxygen meter will never run out.
Numpad 6: No Pass Out - toggle this on and the Passing Out meter will never run out.
Unlock more trainer options including updates from here - Heat Signature Trainer