At its core is a really deep fighter with some very complicated mechanics that demand high execution and precision. (gamerassaultweekly.com)
Now I'm no expert at fighting games, but I certainly enjoy them — it helps when they're easy to play and don't force you to learn overly complicated mechanics. (useapotion.com)
Argos has some depth, but I don't think it has the most complicated mechanics in the game. (n4g.com)