I would say newgrounds got a exellent version of Solid Snake with this game, very simular from the knocking on the walls to the sneaking baseings. But even if you could call the idea "stolen" the game is awesome!
Reviews for "Stealth Hunter 2"
Wow cool i love it. A very good stealth game. 5 Stars
DAMN! this is raW with a capital W ;)
OMG I LOVE IT
It is quite good yes, could have some voice when the texts appear above the heads but apart from that, it is good.