Could've been an interesting game if the developers didn't abandon it. There are 4 "episodes" with 3 levels each except the last episode only has 2. For a total of 11 levels, it's not a lot. Took me about 3 hours to completely beat the game. It's like a left for dead rip off, with almost no content. I regret wasting money on this considering I have only played it for maybe 8-10 hours. Definitely not worth the 40 I paid for it. Taught me to be wary of new games that cost 40 bucks.