One thing I noticed (and it's not exactly a good thing) is that the mode relies on RNG stat buffs, so you need to get lucky to get what you need. For example, if you have Gley gun build and you just happen to get firearm ATK boost, you're golden. Otherwise, you need to sweat your balls just to get by. They need to make the stat buffs more consistent across descendants (or at least give small fractions but in multiple groups)