Definitely the best entry I've seen so far in this jam, after rating 20+ games! Did you really started from scratch? Because the game is so complete in all its aspects: graphics, sound, gameplay, theme...and (almost, see my other post) bug-free!
From the comments, I find that people underestimate the work accomplished here, especially compared to the games I've seen, which mostly are in prototype stage. That makes me wants to change all my other ratings ^^ You are just not playing in the same category.
I especially like the way you respected the theme and found a cool concept to develop.
The tutorial is really useful and impeccably made.
Also, kudos for making an html 5 game! That removes all barriers from playing.
Some comments on the gameplay: it was not totally clear what I was supposed to fear during the game. How does the threat level evolve? Does it depend on my actions? Is there a fixed duration for the game?
Keep up the good work,
Cheers!