This is a fun little game and not to difficult either. It can probably be completed in less than 5 hours if you have some help with the "Dont Stop Believing" achievement. I would recommend getting this achievement first then going for the rest, this way you dont have to worry about ranking up.
Once you have this achievement you can breeze the rest.
All the achievements are boost able and do not take to long at all.
All in all this game is quick, easy and fun.
If you do require help with the "Don't Stop Believing" achievement then please feel free to message me and i will do my best to help you out.
Enjoy the game for what it is. This is part of the reason why i still help people out, 1, because i'm nice and 2, because its a fun little game.