If you do the last venture in the Mountain Clan chain in less than an hour, you get an achievement that gives you a coin tribute. I have tried this a few times. Last time I used the star charts to get my generals to the island as fast as possible, and burnt a lot of buffs taking out as many camps as possible without combat. Even with that, I still ended up about 5 minutes over. I have a lot of fully skilled generals, I was never waiting for a general to return before I sent them out again, I could send generals one after the other, only needing to wait for interceptions to clear or for leaders to die so I could move generals up.
Is there a foolproof guide for it? Does it rely on getting the snowshoes from Unknown Regions (normally I follow the SettlersOnlineWiki guides that get the other three buffs instead). Is it possible to complete it without Snowshoes?
I have fully skilled generals of all kinds. I'm not limited by that. Hit me with your best guides please!