Here is the full list of all 34 Metal Gear Solid 4 trophies - there are 19 bronze, 9 silver, 5 gold and 1 platinum.
Obtained all trophies.
Obtained all iPod® tracks (excluding tracks obtained via password).
Viewed all flashbacks.
Ended ALERT status while wearing the Corpse Camo.
Caused a "divine wind" using the Tanegashima.
Obtained the Stealth Camouflage.
Obtained the Bandana.
Obtained all weapons (excluding weapons obtained via password).
Obtained the Solar Gun.
Defeated Raging Raven by non-lethal means, and obtained the Raging Raven Doll.
Controlled an enemy soldier's emotions using an Emotive Magazine.
Viewed all model posters.
Defeated Laughing Octopus by non-lethal means, and obtained the Laughing Octopus Doll.
Took control of an enemy soldier's body using the Mantis Doll or Sorrow Doll.
Cleared Act 5 (Outer Haven).
Defeated Screaming Mantis by non-lethal means, and obtained the Screaming Mantis Doll.
Got kissed by Ocelot during the final battle.
Cleared Act 4 (Shadow Moses).
Piloted Metal Gear REX and screamed at your enemy.
Defeated Crying Wolf by non-lethal means, and obtained the Crying Wolf Doll.
Obtained 10 or more types of FaceCamo (excluding types obtained via password).
Snapped at least 5 shots of ghosts on Shadow Moses Island.
Used overhead view on Shadow Moses Island.
Cleared Act 3 (Eastern Europe).
Cleared Act 2 (South America).
Found a crop circle and heard a mysterious voice.
Played Oishii Two-han Seikatsu and made one of the BB Corps dance.
Cleared Act 1 (Middle East).
Escaped the Haven Troopers in the Middle East by non-lethal means, and obtained the Frog Soldier Doll.
Killed many enemies in one area, and vomited.
Knocked an enemy soldier flying using a Drum Can.
Shocked an enemy soldier using Mk. II/III.
Broke off the most important part of a statue.
Held an enemy soldier at gunpoint and performed a body check.