Talk:FAQ/@comment-36.72.79.200-20131226104432/@comment-71.254.174.166-20140628134343

Missions requiring specific tier weapons require ONLY that tier, not "or higher." This costs gems, but you can win gems in the daily spin, so you don't ever have to spend cash (but it helps). You do NOT have to complete any of the missions to advance to the next map area; you only need to kill the Boss to go on. Winning Missions is gold for XP & gold, though.