How do you unlock the special evants in dusty dunes and treasure lake to..

Well, you could emulate the energizer bunny and just keep going and going and going............. Really, I've never correlated completing a task or side mission with one of the specials showing up. I think you have to beat the game before some of them do, but I will usually do side missions as they become available, so am not sure. Maybe someone else out there has more info , would like to hear it if so.

As for Tarbo, Siamo and the rest of the specials, try using the appropriately colored mask and just keep going back to the various sites until you ind them.

Or, as I've mentioned before, any vivosaur 1-100 is available in the original FF game and can be sent over the wifi if you have access to the old game and a second DS.

Good luck completing your collection. And, BTW, you need to collect duplicates of all 30 vivosaurs that superevolve, and this means you have to bank any that you've already evolved, before you get the completist mask. Hope this helps.