To power up to your maximum, get the items hidden on the screen, then simply
exit the room, and re-enter. The items should reappear.
Assuming you have called a saved game TRY1, search the root directory of
RELENTLESS and use a file viewer on all files with the extension LBA. Copy
the one, in which you find the name TRY1 to a new subdirectory called SAV.
The program loads this LBA file every time you exit, restart and choose
the saved game TRY1 - nevermind where you are at any moment in the game.
So basically, every time you die, or do something wrong, you just exit, and
copy your backed up save game from the SAV directory. SIMPLE!