So the developers of the game said that your camera will somehow be integrated into the game. Now in the alternate playthrough of the E3 mission,
When he takes out the guard by the waterfall, you'll notice he picks up an SD Card. Now if you don't know what an SD Card is, it's basically a chip for cameras that stores pictures. So the more SD Cards you get from searching bodies the more pictures you can take? Makes sense but I don't know how pictures are going to help. Ideas, anyone?
Also, at the end of this particular playthrough, (right before he boards the chopper) you see it says
"1 Kill Point Available. Press START to access menu."
In interviews with Dan Hay, when asked about the XP appearing on-screen he said this:
"What do you think the XP means? I'll bet you money it's exactly what you're guessing."
So this is basically confirmed: There are player abilities that can be chosen and upgraded via XP in Far Cry 3. I'm thinking kind of like The Elder Scrolls games? I don't know exactly how they're going to do it. Kind of like,
"Oh great. I have a skill point. I'm going to use it to upgrade my stealth abilities."
And now you have a slightly better chance of enemies not noticing you? Who knows. Only time will tell. I would still love to hear YOUR opinion on it all though. Cheers!