haven't spent any money or items yet.
(AR 25, WL 1, 15000 EXP, 5000000 Mora)
getting all to lvl 20 through combat.

My current build.
used Genshin Optimizer but didn't get it.
(pics made with Artifacter.)

quick googling tells me these are the best weapons.

Defeating the Eye of the Storm, Amber only
1) dodge "tornado" with sprint
2) it won't attack if u keep attacking
https://youtu.be/-LiTIUeDmDQ