Played some Sneaky Sneaky and while I really like the art style and the game controls well, I feel like the game is too easy. It's too forgiving, for a stealth game at least. There's no real consequences for being spotted, no extra motivation to remain unseen. Die and you simply start in the same room. You can acquire a near endless amount of arrows to attack enemies from a distance. You can upgrade yourself with more health and more damage, making early enemies a non-issue.
Now that said, I prefer ghosting levels and old school Splinter Cell over Batman and Blacklist so those probably won't be issues for everyone. The actual game is pretty good, a nice blend of puzzle and action, real time and turn based gameplay. Enemies move in patterns that you can learn to avoid, and if you're spotted, your enemies get three turns to attack. The different enemy abilities mixed with the strategic nature of the game makes Sneaky Sneaky feel more like a puzzle game than a straight-up stealth title. The colorful cute visuals definitely give the game a nice presentation.
There's also a very slight Metroid-esque elements in that you can return to early levels with new equipment you unlock to open previously inaccessible areas. But to be clear, it's not a Metroidvania; the game is separate levels.
If there's one flaw, it's the enemies with random routes. It totally throws a wrench into the methodical puzzle nature of the game. Waiting and watching to time your movements to avoid patrols is a key and rewarding part of stealth games; waiting for the random chance of an enemy to move and having no way to know where they're go next just ruins that element