MGS 2 HD:
I loved running as Snake in the tanker.
It annoyed me the that I couldn't give commander Dolph a punch with stealth camo, or hit him with a sleeping dart for the lulz of doing so.
The tanker chapter felt awesome, the rain, the heights from the bridge, etc.
The Plant chapter was terrible.
Raiden was quite enjoyable, sadly, Snake and Otacon were revealed way too late, and never given a full reason why they got there.
I hated the expectation of "Save the prez and hostages, kthxbai." to be destroyed with waaay too much time getting rid of Fatmans bombs, not to count the backtracking.
And seriously, you only get to use the sniper rifle on 2 places, then it's pure crap.
MGS3 was revolutionary however. Camo indexes, forests, a few random buildings, and a twist to see the original of the Three Snakes- Naked Snake/Big Boss. Not to count how suppressors worn out and a fun CQC. Very good. I hope to get a PS3 to play the remaining games such as peacewalker and the upcoming Ground Zeroes/Phantom Pain.