Here's a very simple script that disables slow heat gain like homing missile, cruising in lava and a few other things.
Sudden, excessive heat will still kill you.
GOG.com r971
CE 6.3
Made by Csimbi
How to use this cheat table?
Install Cheat Engine
Double-click the .CT file in order to open it.
Click the PC icon in Cheat Engine in order to select the game process.
Keep the list.
Activate the trainer options by checking boxes or setting values from 0 to 1