Thomas advances from left to right across five floors, defeating enemies and reaching the elevator at the end of each section. Each floor contains regular attackers, hazards, and a boss encounter, with the final floor leading to Mr. X.

The joystick moves Thomas, makes him crouch or jump, and helps position attacks. Punches are quicker, while kicks provide different reach and timing. Players must read enemy entrances, duck or jump over threats, and exploit openings. Completing a floor advances the rescue mission; after the ending, the game can continue at a higher difficulty loop.

Stay near the center of the screen so incoming enemies can be reached without being trapped at an edge. Use crouching attacks against low or close threats, and jump over knives, jars, and other projectiles when attacking is unsafe.

Learn the timing of each floor boss rather than attacking continuously. Preserve lives by prioritizing enemies entering from behind, and avoid jumping unless it clears a hazard or creates a safe opening. On later loops, faster patterns make positioning and conservative attacks increasingly important.