Great game! I really enjoyed playing through this game, the puzzles were all great, even if I was stumped by my own poor geographical knowledge.
The story was interesting, I definitely wanted the monster to show up again at the end; but leaving the end as it is was smart, as it adds a lot of questions on whether the monster was ever there to begin with, or we might simply be reacting to chemical fumes and hallucinating.
Great job on this game, looking forward to your next release!