The gameplay is incredible - arguably better than MGSV's in many ways.
But there's barely any of it. Or at least, barely any good stuff. Most of it is weird contrived scenarios or shoebox encounters. Act 1 and Act 2 are two of the greatest game segments I've ever played... then it collapses.
And the story is pretty painful on the whole. The cutscenes aren't boring, they're just poorly paced and often poorly written.
I will definitely hold expectations, I'm not expecting anything near MGSV let alone a game from 08.
but what about
Ya know
The game's
gameplay
Ah you asked specifically about it... but not in the OP
The gameplay is incredible. It's insanely tight. Like the most crisp movement ever. Some of the deepest mechanics ever - holding guards up, frisking them, interrogating them; tons of physical moves, shit like lie on your back and throw grenades backwards over your head for a different arc; octo-camo is cool but you can also do it without; disguises; fucking with guards via the SOP system... The shooting is pretty tight. There are tons of tools and weapons (there are far too many guns, it's like completely redundant how many there are) with some really cool depth in the bosses (albeit not to the level of MGS3).