Use the -opengl line if you want the overlay in game. Not sure about FRAPS working with it or not.Playing Dungeons of Dredmore, it's a lot of fun, even if I'm terrible at it. My longest run yet was just ended after I accidentally drank poison and killed myself. Oops. My goal is to earn my first Xmas cheesemint but I'll probably keep playing after that, good shit.
Is it normal for Fraps and the Steam overlay to not work with DoD?
Not sure about you but I play it as a timewaster/listening to podcasts so I turn off all the sound and play it windowed. If you play it windowed the achievements pop up like a notice would pop up when not playing a game any other time - just not in the game window.