[Arknights] RS-8 Easy AFK Strategy 

I think he's pretty normal boss and at same time very annoying. He got invisible like 2-3 times on 2nd phase and keep blasting ice around all operators. Also with this territory map making other operator become freeze without heat is giving him too much advantage if the heat item on cooldown

probably one of the same type as her, but if dont have then maybe try any lane holder (mountain/blaze/any strong guard/etc.) + any helidrop/fast redeploy (texalter/kirin yato/phantom/ntr/etc.) to replace horn