I'm currently going through it and I'm surprised it's so overlooked. Never really seen it mentioned. It uses cel-shading and comic book-style speech bubbles to display "tap, tap, tap" when guards are walking behind corners, and inlaid frames displaying grenade explosions and enemies getting headshot by the sniper rifle or crossbow. Pretty solid gameplay and it's surprisingly polished in terms of weapon mechanics and movement. A good amount of weapons and levels.
It should be picked up by GoG if Ubisoft are willing.