Complex sentence: GameSpy gave the game 4 stars out of 5, outlining that the game's innovative combat system succeeded in redefining MMO combat, and regarded it as one of the most appealing features.
Split into simpler sentences: GameSpy gave the game 4 stars out of 5. Outlining that the game's innovative combat system succeeded in redefining MMO combat, and regarded it as one of the most appealing features.