Help with Progress Missions about Artifacts
I've been upgrading a champion to rank 5 making a lot of sacrifices, spending a lot of time, etc to give him 6 offense artifacts, I guessed "atack" artifacts would be the same (my language is Spanish). At the beginning I didn't even know how can any champion have 6 offense artifacts if none helmet or shield are offense artifacts. I discovered rings, amulets and so, so I went for them to equip Galek (a rare type ATK champion) with offense ring and amulet too to finally after taking him to the rank 5 and ascending to 5, he can have the 6 offense artifacts: weapon, gauntlets, chestplate, boots, ring and amulet. BUT I still don't get the progress mission accomplished with the deserved rewards. Is there anything I am missing?