Did they defeat tulpa and how ?

Talpa absorbs all of them, except for Ryo. Eventually, Talpa beats Ryo and absorbs him, too. Ryo finds out the origin of the armors from the Ancient. Inside Talpa, Ryo has one final talk with the Ancient and eventually finds the strength to not give up and frees himself from Talpa. Ryo then combines the power of the other four armors with his own armor and upgrades it to white Armor of Inferno and beats Talpa.