V3 said:Backtracking is good, when there are things to be discovered and you have an idea where to go. Backtracking is bad, when you have no clue at all.
I agree. Which is why I stated that if there was a way for me to mark certain areas of the map (e.g. 'Hmm, magnetic rail here') I would easily know to go back to those areas I couldn't get past before rather than being forced to either remember it (unlikely as there are so many areas this way) or plod through each hallway & room to refresh my memory.