I've noticed this fine classic game doesn't have any guides up for it, so I've decided to take it upon myself to make one.
For now, click the link below to access the playlist for my video walkthrough on Youtube:
As of this revision, I just finished uploading all the individual boss fights for Hollow Bastion and am working on the full walkthrough for the world.
Once the video walkthrough is complete, I intend to create separate pages here for each world with all relevant videos and some tips/strategies posted on each page. I'll use this particular page for general advice/recommendations about the game as a whole (such as which dream weapons to pick/drop at the start, party setups, etc.).
Anyways, for anyone wondering: the videos in the above playlist were done in full 1080p HD using the PCSX2 emulator.