Stuck in Unknown Island: Tell the shaman when the portal is safe

I finished all missions but the final one still doesn't work, I don't know why... there is no enemy left on the map. Could some one help me? thanks.

w ww.mediafire.com/view/6am9v575p88spwl/messageImage_1514782710433.jpg

w ww.mediafire.com/view/6kb2chev9kwctk1/messageImage_1514782591340.jpg

Gamesave:
w ww.mediafire.com/file/67pe7be16b5x1af/Alanna_3h17m37s_Liannon.rar