Complex sentence: Wanderer's peaceful life with the group is disturbed by the realization that the humans have not given up on reclaiming those the Souls have enslaved; by experimenting with ways of removing Souls from their hosts, both beings always die in the process.
Split into simpler sentences: Wanderer's peaceful life with the group is disturbed by the realization that the humans have not given up on reclaiming those the Souls have enslaved. They experiment with ways of removing Souls from their hosts; however, both beings always die in the process.