Complex sentence: Recently, he rejoins the Weapon X program and his cybernetic material was once again upgraded to be able to duplicate the abilities of any member in Weapon X. Kane was made into the team's hitman.
Split into simpler sentences: Recently, he rejoined the Weapon X program and his cybernetic material was once again upgraded. The new upgrade made him able to duplicate the abilities of any member in Weapon X. Kane became the team's hitman.