The main gimmick of this challenge stage is that enemies spawn from 2 different locations. This splits your team into 2, the left and right sides. If your account is highly invested and can tank through the chip damage dealt throughout the stage. You can consider not bringing a tank and just having AoE damage dealers on the field. For lower investment teams, you can bring 1 or 2 tanks if you are struggling to survive.
For team building, you will want the team to mostly consist of Explosive damage dealers, as all enemies in this stage have Light armor. Aside from this, you can fill the rest of the team with either general supports or healers and tanks as needed.
Note that characters listed here are only some of the viable options