I have to say, when I first started playing this game I didn't expect much because of the low price tag (I bought it when it was on sale).
But I was really surprised by how good the game actually is. After playing the first levels I quickly got the hang of it and could enjoy the game even more.
I also like the challenge when you play through the game for the first time.

Also: I don't know why but I kinda didn't notice the ingame shop. This resulted in me playing through the game on hard without any items, which was of course much more challenging than playing with items, but since I like difficult games (especially platformers) I don't regret not buying anything.

The gameplay and the bosses remind me of Megaman, and I think this game is pretty much on the same level as Megaman 2 (the only Mega Man game I've played *cough*) when it comes to having fun playing the game.

All in all:
pros:
The controls are really smooth and once you get the hang of them you really start to enjoy this game.
Really well designed stages and bosses
The various game modes are also super fun to play if you want the extra challenge. (Arcade mode and challenge mode)
The difficulty settings
The 16bit+ graphics look really nice

neutral:
The music. It's clearly not bad, but it's also not something that gets stuck in your ears easily (unlike cave story or Mega Man)
The story: Honestly: it's a platformer, it doesn't need to have a great story. The great humour makes up for it though.

cons:
It could be a little bit longer. If you're fast, you can play through this game in about 1 hour (I have also seen some speedrunners getting <15 minutes) . Honestly, this is not a huge flaw, the games is still fun to play.


If I had to give this game a score, I would give it an 8/10.

All in all it's a really nice fast paced game. Was really frun to play. Definitely worth buying, especially when on sale.