>>534786683
Nevermind, was able to clear it with who I remembered you have. The biggest threat here are the slugs since they power up the storm, meaning that you just have to ensure they don't reach it and becomes a lot simpler. Sudarams + Chimeras are daunting but can be stalled with who you have. I recommend using a blocker on the bottom lane (three tiles left from the bottom right red box) to kill the aforementioned slugs. Mountain can lanehold really well and might be able to solo everything (with a healer, maybe?), though it's easier just to nuke everything that comes from the top lane.
https://files.catbox.moe/q6azz7.webm
Here's what I did. No need to click if you want to remain unspoiled!
There are honestly quite a few ways to handle this stage with your squad, with how tanky both Mountain and Specter are. Good luck!
As always, replacements are: Exu with Kroos2, Yu with Beagle, Gavial/Warf with Ansel & Hibiscus.