I wouldn't say I'm the best player of MGS, I believe the best rank I got in 4 was Fox rank, playing Solid Normal mode. I can hold my own though and I did get an S-rank after some practice in playing Ground Zeroes.<br/><br/>I remember The Boss being particularly tough in Snake Eater... I myself did a tactic of using CQC punch-kick combos on her, running away and laying down in the white flowers with white camo so she couldn't see me and tracking her with my sniper rifle, taking pot-shots at her and then running away if she spotted me. Basically hit and run attacks to get by.<br/>The bosses I found were the hardest on that game, they really were quite tough.<br/><br/>I found MGS4 to be quite simple on the lower difficulty levels. Solid Normal was hard for me to complete and get the Fox rank though. I wasn't gonna be able to play Big Boss Hard<em>and</em>get the Fox Hound rank.