How to counter UC IMIW

I've done a completion of the side quest almost itemlessly. Only Mysterio took 2 revives and potions because of lag.
Unfortunately I'm stuck at IMIW during exploration.
Below is my roster. I also have a 3* Red mags and Guardian I'm considering bringing as a last resort.

Unfortunately I'm stuck at IMIW during exploration.
Below is my roster. I also have a 3* Red mags and Guardian I'm considering bringing as a last resort.

3
Comments
I also got good rng with the molecular armour. They only got to 4 once or twice