As much fun as quietly knifing a guard can be (don't try this at home), it gets old when all challenge is removed. Stealth games rely on the hunt: the cat and mouse interplay of assassin and victim.
Yet in Shinobido 2, there's no consequence to breaking cover; at least, nothing running away for a few seconds and trying again when guard patterns reset can't easily fix.
Once you discover that rooftop sprints into jumping executions will see you through most situations, it's easy to be as loud as a one-man band and still walk away without trouble.
Sure there are plenty of missions and some varied game types later on, but those dimwitted enemies keep everything sub-par. Easy to exploit and uneasy on the eye, then: Shinobidon't.
Feels like it's been hiding in the bushes for years, growing old as it waits to spring out on stealth fans.