This is a top-down puzzle game with a little action/shooting in it. I have not played any single player mode at all, but the co-op element is quite good. Co-op partner shares the same screen, so both players cannot wander too far away from each other.
The puzzles are a little too easy for me, but this makes this game a good casual top-down platformer that can be played without stress.
Movement controls aren't very good, a gamepad with analog stick is highly recommended. Because some platforms are diagonal, using keyboard to navigate is very awkward sometimes.
This game do have some awesome moments. There is a stage where you evade obstacles while dodging bullets to get to the other side before a giant monster get to you. Also there are a few awesome boss fights.
Graphics are not bad. Audio is good. Story plot is negligible. There are a few glitches especially when the connection is bad while playing online co-op, but nothing is too game-breaking. Glitches are easily fixed by reloading a checkpoint or replaying the level.
Replayability is limited. You can only replay the stages a few times to earn all the collectibles or challenges. After all that, there is no point to replay anymore.
100% Achievement is moderately easy.
The DLCs adds a little content into the game, but some challenges can be quite frustrating to complete if you aren't very good in the game.
My Score: 8/10