PS Vita Reviews just finished their play of the Vita's newest retro game. Here are their thoughts on Shovel Knight:
"Shovel Knight is a fun throwback to the games of the NES era. On the downside, some of the controls are not explained to you. Outside of this is an addicting platformer game that looks good, plays good, and is a fun experience, whether it’s on the go or at home on the PSTV."