The stealth option work on solders but doesn't work when you're in front of a tank, and helicopter
The trick for that is to stay prone/crouched walk slowly and try to get a lock on their vehicle with a rocket launcher
What is evil level? Is that based on how many people you kill instead of subdue or something? First I've heard of the mechanic.
Your horn grows on your head, and you get permanent blood on you
Is that for real? That's kind of retarded for a metal gear solid game, but I digress.
It actually does look pretty cool. but yeah
It's metal gear