Train is Gunvolt and Beck's first stage and Ekoro's second to last stage in Mighty Gunvolt. It is based off of 1st Sumeragi. It has some of the same assets, but the boss is Viper instead of Sumeragi Mantis. The music is an 8-bit rendition of Sprinting Through the Darkness.
The stage starts with a hallway with shutters and turns into a downward shaft with lots of Sumeragi soldiers. Near the end of this section, you’ll reach a room with two cannons. Be careful, as they can both get you from any part of the room. While eliminating them isn’t necessary, it helps with getting a smooth descent towards the next section. After this, you’ll fall onto the train, where tons of Sumeragi grunts lie in wait.