To ramp up the immersion level even more turn off the music. REALLY tune in to the sounds coming out to fthe jungle and such as you creep around. If you have a good headset you will feel like you are really there.
Incredible? What version are you playing... mine gets more boring the longer I play it. The more I explore only to find more of nothing is really disappointing. Which sucks cause I really wanted to enjoy this game as much as its been hyped up to be.
Been playing for about a week, I love it too. Love the little details, like abandoned party sites. Still trying to figure out how to sneak into a fort
as said, use rocks.
some things i like to do at outposts to sneak in or eradicate enemies:
set nearby animals on fire and hope they run into the outpost to distract/kill guards.
if you wound an animal enough, they will flee. you can use them to draw the guards attention.
observe the terrain and ALWAYS use the camera to scout for enemy positions.
take out any alarms switches with a silenced sniper rifle.
if there is a high enough cliff, what i like to do is get a vehicle, put the pdeal to the metal towards the outpost and jump out. if the cliff is high enough, the vehicle SHOULD explode and set surrounding buildings and grass/trees on fire drawing attention away or killing enemies.
and on a related note, im saddened that C4 doesnt stick to anything let alone vehicles. :-(