I like this prototype but it doesn't really feel like a stealth game at all considering enemies can look at you and not do anything besides move, the music was nice but the key pick up noise was too loud for it's own good, the squash and stretch the player does is nice but I would have appreciated some actual animation for the sprites, and a proper background, the controls are good as well, the player feels smooth to handle and the levels are nice but only having 3 one screen wide levels isn't the greatest, I feel like you could have doubled that level count somewhat easily due to only having 2 mechanics.