Can we say it's a rail shooter? x)
Too bad because once dead, the game closes.
Sometimes the change of weapons with a click cannot be done (during reloading).
The rails can disappear when move going back.
Some graphics bug occurs when an enemy dies.
When the level is charged we can notice lines appear.
If we stay put from the start and the 1st wagon dies we lose immediately.
When you restart a game with the "L" key, there are no more weapons available. Moreover, if we press escape. The game is closed.
I also had a bug where the train was in the center of the screen with lots of enemies around and I couldn't move.
Otherwise, it would be nice to have a scoreboard with the number of points and the distance meters.
After all this inconvenience, the game is still pretty good overall.