I have just played this and I wanted to let you know about it.
It has hard to find, small collectibles.
Sometimes it is not that clear what you have to do.
You only have 4 hours to complete it.
It says it is for at least level 42 - but.....
you need gunpowder (something that level 42s can't make)
... and you need a lot of it!
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Please don't start this scenario unless you have over 800 gunpowder in storage.
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Despite all of this, it can be completed well within the given time and the rewards are good.