Complex sentence: Offensively, she is very competent against normal enemies due to her excellent weapon reach and penetrability, but takes more time to kill the later bosses due to her slow attack speed and relatively weak strength.
Split into simpler sentences: Offensively, she is competent against normal enemies due to the excellent reach and penetrability of her weapons. However, she takes more time to kill the later bosses due to her slow attack speed and weak strength.