I just found a minor bug, long after getting the ring and using it several times. I went back to Doyle's corpse and got possesed there and Doyle asked me "Will we get that ring?" and David answers "Probably". It is nothing but, that's one there. There's a Typo too in the Merchant's menu, on the description of the Knuckles "when a bare punch is now(not) enough" I'm sure someone already called that one up.
Anyhow, I would like to have any excuse to go back to the basement, I liked to go there everytime to get Doyle. It was frustrating to go there in regards to game mechanic (the ring system is WAAY better), but I liked the atmosphere and everything related to going down there alone. I would like to go down there to check on something, maybe unlockable text books of terror, anything.