So finished this, decent game but not too great.
There's many fairly large design issues I feel.
First the game is extremely repetitive. The side quests content is boring as fuck, I mean there's a few proper quests but most of it is just climb on a radio tower, capture the 2camps in the area you just revealed, do the wanted and hunts quests in these, move to next. All of them are extremely similar and just add stronger enemies as you progress but all the wanted quests play the same, all the village captures play the same etc. The layout changes a bit but it's really boring very quickly. The Rakyat challenges or even collecting letters/relics are like that too, there's a few interesting ones but 95% of them are just diving/climbing/exploring caves but they lack depth. Only the main story quests add variety in terms of places, objectives, gameplay and such.
Second, the whole crafting/economy is completely fucked. You have too much money basically all the time, even if you don't loot too many corpses. On that note, fuck whoever thought making loot shit should require to hold a key, have a shitty 1s animation(for corpses) and can only be performed at a very very close range. Money is worthless too for the most part, only thing worth buying are relic maps(the cheapest ones) and signature weapons. Crafting starts by extremely limiting your ressources(ammo, bag space, syringe and so on) yet you unlock everything by basically 1/4 of the game minus the last upgrades that require special hunts which are unlocked before half of the game is done and earlier if you explore shit. That makes the talent to loot more hides fairly worthless as I had almost everything already unlocked by the time I got the storyquest which unlocked it as a skill. Should have been swapped with the herb one, you don't need to collect many herbs early game since you have few recipes and not a big need for them anyway. The whole thing feels like a complete afterthought and becomes pointless by 1/4 into the game, all the animals and skinning and shit worthless. Herbs/syringes stay useful especially the sprint one, who needs cars when you can just run as fast.
Third I pointed it out before but difficulty is complete shit. Even in the last parts of the game you can rambo your way in or completely trivialize most encounters by sniping from a bush at long range with a silencer. Weapons like the flamethrower instantly CC 99% of the enemies in the game preventing them from firing back, only the flamethrower guys aren't. There's weird inconsistencies with difficulty too, like how if the enemies are alert they'll spot you from 100m away if you're not hidden out of sight but they can't notice you 1m away if they're not completely alert if you're standing in a bush. Or how they spot corpses from super far for whatever reason, but you can't hide corpses(you can takedown drag but it's clunky as shit and doesn't help in many situations). That's on the hardest difficulty I can't even think how easy it is on normal or on easy. Makes the whole process of grinding capture camps and shit even more boring since there's rarely any difficulty, most of the 2nd island caps I was tired of doing infiltration stuff so I completed them with a sniper rifle and it was taking less than a minute to spot all the guys then execute them in one shot to get the undetected xp bonus.
Finally, one bug plagued me the whole game, I had my bow showing all the time for whatever fucked up reason. I'd see its shadow on the ground while running, could see it if I looked down, and that means it was popping out in every fucking cutscene of the game. That was annoying as shit. Tried unequipping/reloading, nothing fixed it.
Still a decent game, looked alright even though I feel it wasn't really that great looking either, makes good pictures but it lacks life, activity, whatever. Music was great though, pretty good choice of weapon and shit, takedowns looked cool even if they became a bit repetitive. Overall a good game but they could have cut 50% of the side content and it wouldn't have changed shit about the game I feel(besides making the island smaller). Story was alright, have to go check youtube for the other ending. Wish there were more choices though, and wish the hero wasn't such a fucking brotard.