A lot of fun elements to this adventure! I think I'll avoid the ornery secretary. She sounds like a pain, except I need that code! I like how you made it possible to reset the stink timer by freeing swamp fairies.  When you say the mockingbird uses "Mimic to cause maximum confusion," are you saying it echoes the players' voices? I thought it was some kind of mechanic because it was capitalized, but I didn't see it anywhere else.  Super cool adventure! Great job!

Love this! I would run it.

You've done a great job of capturing the joy of being a bunch of disgusting toads with their own zany perspective on things. Making it a gauntlet is an inspired choice.

The choice of technologically advanced elves who are imposing on nature does clash with their archetypal trappings, which was a little jarring at first. But really playing up their snootiness helps to overcome this. Who doesn't like putting snootiness in its place? I would have liked to have seen Li'ink take a bigger role, maybe taunting the battlewugs over an intercom (classic Battletoads vibes right there) to maximise his aura farming.

But the main point of improvement I can see is the map. It's functional, but doesn't do very much to help the GM understand what each room is about and how to run it. If you could punch it up to be more illustrated with the rooms features that would be mint. Bonus points for making it look like something a battlewug would draw!