Are these sentences properly worded?

FYI- Alegni is the warlord and the tiefling. The assassin Artemis Entreri, who was essentially Alegni’s slave since he was susceptible to the control of the tiefling’s magical sword Charon’s Claw, decided to seek out Drizzt and Dahlia in hopes of the three of them working together to defeat the Netherese warlord and free himself of the blade’s servitude. As Drizzt and Dahlia were traveling toward Neverwinter, the Cavus Dun mercenary force beset them, and during the fight, Entreri arrived and helped the two companions defeat the Shadovar.