The game is too dark!

[AAAAA42]

So, my computer runs Amnesia perfectly. No major flaws, everything works fine.

However, my monitor broke a while ago and I've been forced to use one that's slightly older. It's not quite as good, but whatever.

My problem is that the game is now too dark! I can hardly see anything in even slight darkness! Even when I put my monitor and the game at full brightness, I can hardly see anything! In some parts, I end up just running around blindly, hoping that I find a doorway.

So, is there anything that I can do to fix this?