Mugen Senshi Valis - Legend of a Fantasm Soldier > NEC PC Engine

Sheltering from the rain Yuuko Asou meets a fellow student, but when the student leaves her a mighty sword appear and a monster comes from nowhere to attack her! She defeats it but her entire city is being destroyed by other monsters, which she kills! She is them summoned by the sword to help fight in the dream world called Vecanti against a nasty emperor called Rogles. Travel to the other world battling the evil generals until you've fought and destroyed Rogles and all he stands for!

If you liked that excellent title and would love to hit more awesome games with a similarly cool arcade vibe then you'll definitely want to have a go at Resident Evil 2 Disk 1, Tekken 3 and the violent-but-cool Grand Theft Auto 2!