Wow, thanks a lot man!
Regarding the first bug: yeah, I'm really sorry for that. I hope the MonoGame version will fix a lot of stuff.
Second bug: Have you tried bombing the complete wall? It is not possible for a room to be created and not be fully traversable. It always is. You must have missed a spot. It looks like there might have been a way left of the hole :)
Third bug: Yeah, I also noticed that when playtesting. I didn't figure out how to fix it, but maybe I will now with MonoGame :)