Team Comp : Eternal, Tio, Valentine, Noa

Hero Build : All Speed for equipment and Spd for Accessories

Requirement : Noa need to have High Atk and Min 50% Critical Chance. Eternal preferable with high Effectiveness. Tio with High HP and Skill 2 upgraded. Fast Valentine

Battle : Basically just do the streotype things with Eternal debuffs and dispel buffs, Tio heals the team, Valentine buffing team and Noa spam Skill 1 for the win. If you still can't win then try lower stage to get your gears, levels and skills done. Confident yet? Try again and you may ask as for why it's still fail despite how long you tried it. 

PS : The challenging part is how to get decent gears for the team. Just try using free gears given to you. After that focus farm Chimera because the speed gear set in there is universal and used in almost all hero.