Level 1. Seppuku Station

Start inside Lo Wang's Dojo of Death. Defeat the two Brown Ninjas who enter through the window using your sword. You can recover health by hitting the dojo walls with your fists.

Exit through the window. Observe the green van crashing into another vehicle, killing a brown ninja. To your left, find a gray truck with an Uzi in the back; pick it up and eliminate any enemies.

Locate the "Baggage Claim" sign and go down the ramp. Eliminate enemies until you reach crates and a GOLD KEY.

Pick up the GOLD KEY and use it to enter the FarEast Railroad Station. Defeat the ninjas inside.

To the left of your entry point, find a black window. Jump through it to find a Riot Gun on a ledge.

Return to the station and find a black vent. Crawl through it until you reach a room containing black armor.

Grab the armor. To the left of the train map, open a panel to find a Missile Launcher. To the left of this panel is a remote controller; interact with it.

Use the remote controller to operate a vehicle. Move the vehicle as far as it goes onto a red dot visible on the left of your screen (minimap (the small circular map in the bottom-left corner of your screen)).

To exit the current area, go to the right of the train map and enter the vent on top. This leads back to the first room of the train station.

Find the door other than the one you entered through and go into the Koi Pond area. Shoot the fish and any other enemies. Behind a wall in the pool, you can find caltrops.

Enter the Pachinko Parlor. Check the Godzilla poster for grenade shells. Pick up the SILVER KEY at the Prize Pick-up space. You can receive items from Pachinko machines if they are not destroyed.

Head to Platform 45 and use the SILVER KEY on the brown door. Hit the switch inside to open the grey doors leading to the train platform.

Eliminate enemies on the train platform. Find shotshells on top of the train and items behind posters.

Head to the right track (the one without the train) and proceed forward. You will encounter a turret; use missiles to destroy it.

Blow up the tubes in the area, which will cause the train to arrive behind you. Enter the train, turn right, and continue to find the end level switch.