Catch a Tsuchinoko (mythical serpent)
This trophy is missable. The Tsuchinoko is a reclusive snake and you can't even detect it normally, not even with thermal vision. You first need to get a few Mousetraps and then head to where Tsuchinoko's live and place the Mousetraps. You can now either wait for the Tsuchinoko to enter the trap, or leave the area and then go immediately back; it's faster to do the latter. It may take a few tries but eventually you'll find a Tsuchinoko in your mousetrap and earn this trophy.
Tsuchinoko's can be found in the following areas; Graniny Gorki, Sokrovenno and Bolshaya Pass South. I have had the best luck with Graniny Gorki. To help expedite a Tsuchinoko being caught, you can run around and shoot (lethal weapon) all other animals in the area; if there are no other animals they won't get caught in your traps. If a different animal gets caught in your trap you'll need to reset it. To reset a trap; crawl over it like a claymore and it'll be back in your inventory to set.