Aesthetically Bastion is fantastic. It looks great; the colours, the design the style..they ooze from every pore of the game in abundance. The music is pretty good too, and the guy who narrates the entire game is very appealing and interesting. He comments on so much, and slowly reveals the initially pretentious and cliched storyline into something interesting and engaging. I didn't care too much for the combat as it felt a tad arcady, but in the end I really liked it as I could choose what weapons I had with me (there's a wide variety of combat styles to adopt due to the vast array of diverse weapons).
Good game.