You had a Monk with amber, right? Or are you missing a healer with amber? I just never used that weapon, so I don't know much about it.
And here, HP drains so quickly. Amber helps, of course; without it, I wouldn't have cleared the first room for 3 stars, but after that, all the characters are practically at zero HP. Unlike Noelle, who heals everyone to full with her ultimate.
Added after 23 hours and 12 minutes
ATTENTION
New codes for 300 Primogems have appeared. They are available until tomorrow.

В тихой однообразной жизни всегда так бывает: каждый отдельный день бесконечно долог, но месяцы и годы мчатся с непостижимой быстротой.
I wanted to offer you some flowers, but a crown would suit a princess like you much better
Смысл жизни в том, что жизнь на тебе не заканчивается