Originally Posted by DoctorNarrative 
Bought it but still haven't played Old World Blues. Probably going to wait for the new guns next week and then play all of it at once.
I would suggest picking up a bottle of ibuprofen too. It's not frustratingly hard or anything, but the level design may give you a bit of a headache. Lots of walking on oddly angled twisting surfaces which the engine has never made feel right and it was giving me a migraine.