To obtain the Big Game: Rumo Kapiba standard quest in XC3 Future Redeemed, interact with the Request Board in Colony 9’s Command Center during Chapter 4. Afterwards, travel directly north of the Lakeside Camp rest spot in The Ragmos Desolation. Just before the Raguel Lake’s waterline you’ll find the Level 35 Rumo Kapiba. Once you defeat it, you’ll complete the quest and receive 1760 EXP and 3720 Gold.