The vibe is excellent and it is full of cool ideas. I think it may be a little too overstuffed, and would better serve a Warden if it were pruned a little so that the more important parts can be emphasized more. The random encounter table is taking quite a bit of space for essentially being different combinations of 3 NPC types. The alert system doesn't appear to have a clear mechanical effect on the rest of the adventure.
I gave you very high marks for art, writing, game design, theme, and favorability, but I think layout and utility could be improved.
Honestly I would love to see you flesh this out into an adventure that is longer than a trifold. I think there is enough here that you could develop it into a really cool multi-page adventure.