If you do not have backup files to restore, then
Do this at your own risk!
Open Windows File Explorer - in the Address bar type
%appdata%\creeperworld3\
In that folder, look for file GameSettings.XML (which you should open with some editor like NotePad++), then change which ever of these you want from "false" to "true"
<unlockProspector>True</unlockProspector>
<unlockTormented>True</unlockTormented>
<unlockAlpha>True</unlockAlpha>
<unlockDMD>True</unlockDMD>
<unlockColonialSpace>True</unlockColonialSpace>
<unlockLoadFile>True</unlockLoadFile>
<unlockCredits>True</unlockCredits>
<unlockProjects>True</unlockProjects>
'If you want to live a happy life, tie it to a goal, not to people or things.'
Albert Einstein
(1879-1955)