Umbral Monument in Arknights Endfield is the kind of mode that humbles people fast. You can walk in with a stacked roster and still get flattened if your setup is sloppy. That's why a lot of players start by tightening their build path and even looking into Arknights endfield boosting for sale when they want a cleaner push through the rougher Agony levels. Raw power matters, sure, but it's not...
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