The puzzles did seem very obscure at times, but bear in mind that this is not Silent Hill(s) - it's a deliberate mind f*ck. It was released as a demo for a made-up game and Kojima and Del Toro no doubt wanted to keep us guessing as long as possible. They're probably surprised that they only managed to play us for a couple of days.
Hats off to them, though. I only watched a playthrough, but damn I'm excited about this! I mean, I would be excited about any Silent Hill reboot - it needs one! Fingers crossed.