I had such a fun time with this game while I was messing around. The random swearing is pretty funny, though I don't know if you meant to have that in for laughs or to be serious. The graphics are pretty cool and I think training how the train looks by pressing the space bar is a nice tough. Also the fights are suuuuuuper fun and I really liked the weapon system.
The juice in this game is off the charts! Though the main menu screen shake is alot and you can see black rectangles where the screen has shaken so hard that the ui elements are displaced. Also, the blocking in this game is pretty hard. Using the shift key to block is pretty hard as I'd need to press the button with my pinkie. Other than that, really impressive you got this game done in a week! Congrats!