[Arknights] CC#7 Day 4 Daily Map Locked-Down Prison Max Risk 15 5 Ops (CHALLENGE)

choose to participate in one challenge for dailies conditions are: don’t use - surtr, silverash, suzu, thorns, mudrock, mountain, kaltsit, chalter, skalter, saria, eya, exu, elysium, phantom, ash, bagpipe, saileach, myrtle if 6 ops or less - 1 extra point