Complex sentence: Aside from that, it's required to throw and smash enemies into the objects on screen to get power-ups and or a katana in which Ryu can use to slash enemies for a short period of time.
Split into simpler sentences: Aside from that, it's required to throw and smash enemies into the objects on screen to get power-ups. Also, the play can find a katana which Ryu can use to slash enemies for a short period of time.