Well, it certainly looks like MGS3 in a modern game engine. Don't really have any complaints about how it looks, but I'm really curious to see some character models. MGS3 had that 3D anime look going for it and it'll be interesting how they will tackle the faces.
I would assume it would be like most modern games with digitally scanned actors but I don't know, Snake's looking like classic Snake from what we see of him here which I'm fine with.
That's why some of the most well received games outside the AAA industry are exactly that. A simple week engineered mechanic or two with everything else built in service if that primary game loop.
Games like Rainworld, Hotline Miami, Witness, Antichamber, Superhot, etc.
The old MGS games were built like that too, everything was pretty well telegraphed through visual design in service of the primary stealth game loop.