The game is fantastic, I haven't enjoyed a game as much as this in a very long time! The level of difficulty increases progressively throughout the levels, with a broad variety of mechanics made possible by the ninjas' skills and the weapons that can be unlocked. After almost 150hs I finally unlocked all 36 achievements, with each not being just a checkbox, but they actually get you to play rounds with a different strategy to acquire them, adding even more opportunities to the gameplay. IMHO, a solid 5 stars!
