Arknights Welfare TG-8 Clear, Challenge Mode

To the Grinning Valley level TG-8, Prime Alley, Challenge Mode, cleared using only Welfare operators.
The main strategy here was to have both physical and arts damage, since different enemies are susceptible to different kinds. Also, I needed to bring Scene, because her buggies reveal the Sand Voyagers, which are otherwise invisible in this Challenge mode. The other big thing, and this is a big one, was to have Gladiia suck Crownslayer into the hole in front of the left gate. Without this trick, I could not defeat Crownslayer, no matter what I tried. I needed to time the activation of Gladiia's third skill just right, to make sure that Crownslayer did get pulled into the hole and didn't dodge away from the pull. The rest was fairly straight forward, if a bit slow. Enjoy.
Welfare operators are as defined at:
arknights.wiki...
wiki/Operator/Welfare.
Comments and advice are always appreciated.