An excellent game - I believe the correct term is a Rouge-Like-Lite? Rouge-Like-Like? It's not a rouge-like game, but one of those games in which some of your progress carries over each time you die, so you can gradually increase your abilities. There is a very smooth power progression curve and you gradually unlock more weapons, abilities, modifiers - you can even make the game more difficult if you want. The combat is very satisfying, the visuals are absolutely gorgeous and the voice acting is.... well, for the most part very well done, except for a few characters who are a bit bland.
The only issue I have with the game is that they could use a few more bosses. The World-2 boss gets pretty tiring after the upteenth millionth time you kill him. They fixed that issue with the first area, but they really need a few more bosses to liven things up a bit.
Other than that, however, it's great. Worth your time and money.