Main reasons I got Platinum...

- I didn't have to replay the game in a higher difficulty setting for another trophy.
- I had already done most of the trophies while playing the game just because I enjoyed doing all the quests and different things.
- The remaining trophies didn't look too difficult - and they weren't, in the end.

The toughest one was completing all the hunting grounds with blazing suns because one particular hunting ground claims to be based about stealth but realistically is all about going crazy and just tearing things up ASAP.