>>537900407
>overworld bosses
Depends. Are we talking about holograms? Because even P2W shitters can't beat that shit. If you are losing to just overworld bosses that drop ascension materials, then there must be something wrong with your team.

Make sure you meet the following:
>level up characters to Lv.90
>level up weapon to Lv.90
>level up all echoes with the correct set to Lv.25
>make sure that your echoes and weapon have a total of 70% crit rate and 240% crit damage or something close to that
>level up ALL skills to Lv.6 then level up important skills to Lv.10
>make sure that there's at least 1 healer in your team like Verina, Youhu, Shorekeeps, etc.

Go to this website, click on your characters, then click on BUILD tab. Check here to find which echo set to use, which weapon works best with your characters, or what skill to prioritize and level up to Lv.10.
https://www.prydwen.gg/wuthering-waves/characters

Good luck, bro.