On the way to the final portal you have to secure and cross the ocean Liquid. This is how you can reach the Mysth area. However, the beasts seem to be stronger here ... Perhaps it is time to try new strategies or to continue training back home in Woods. It's good that there are enough ressources everywhere, to be able to continue arming against new beasts. If you really successfully secure the ocean and make it to the Mysth area, the true journey in the world of Arrival of Beasts begins.