This is the most common use for such a file name. It likely points to a "hack-and-slash" or "bullet-hell" style game where the player controls the Greek hero Perseus.
While Perseus is traditionally a "Monster Slayer," modern media often conflates "Titans" (the predecessors to the Olympian Gods) with "Giants." A game with this title likely features Perseus taking on the role usually reserved for Zeus or Heracles—overthrowing the ancient Titans. Safety & Best Practices Perseus-Titan-Slayer.rar
Combat involving the Harpe (curved sword), the Shield of Athena, and the Sandals of Hermes. This is the most common use for such a file name