Catch a Tsuchinoko (mythical serpent)

Collect every type of fish

Collect every type of frog

Collect every type of medicinal plant

Collect every type of fruit

CQC Interrogate an enemy

Eat a snake of any type

Shoot a Kerotan for the first time

Obtain the stealth camo

Clear the game without entering Alert Mode (not including events where Alert Mode is mandatory)

Finish the game on any difficulty

Defeat Shagohod