This is a side scrolling game like Contra Hard corps or 4. 2 player Couch coop, you get different power ups & weapons etc. Last boss was pretty long. Took me 1 hour to beat this game. 6 missions, You have to do the 1st 5. You can do any of those 5 in whatever order you want before you play the 6 mission. Terms of difficulty, 5/10 as you are recognizing patterns each time you die. I beat it once & it's not a fun game to replay over again.