Thank you so much! You're definitely right, passing the cinematic is a must. I added this feature an updated the game. Now, you can press enter or space to pass the cinematic. Thanks for advice :)
Aiming is really difficult in the game(because the train moves...) You can actually shot enemies, if they're in your weapon's range. For example rifle is easiest weapon to use because range is large, damage is high and you are able to shot far enemies.
In a nutshell, you don't have to be on the front of the locomotive. But that's a fact, it's the easiest place to shot enemies.
By the way, I think behind of the doors are great places to aim and shot.
