Oh wow! Awesome graphics ya got here, looks really polished and the gameplay is fun too! The music sounds great and fitting, well done!
I can see potential in this game and more possible levels beyond this! You could even add the reverse, where you can play as a bandit raiding a train, clearing each carriage and deciding is it time to detach it to win before it reaches the end (you must be on it), you'll get more points depends on how many carriage you have at the end!