You have to unlock Mexico and kill a coyote. This will trigger the master hunter challenges. Coyotes can be found outside of Mexico but the most common place for them is Mexico.
to unlock absolutely everything you must be level 50 on 5th prestige in online mode, this is hard and takes an extremely long time, doing this unlocks chracters such as John and Jack Marston.
you have to level up to level 50 and pass into legend. everytime you pass into legend, you unlock a legendary character.
Yes.
The War horse code is a code used to unlock the War horse in Red Dead Redemption.
yes you can everything.
No.
If you want to be able to do this you need to complete the story missions on Red Dead Redemption and eventually you will unlock the higher levels of dead eye which allow you to use the X's.
You unlock them as you level up through the red dead redemption multiplayer
There is no such thing as Red Dead Redemption black there is only the regular Red Dead Redemption and Red Dead Redemption limited edition.
simple internet
You must get to a certain experience level
There are two, Red Dead Revolver, and Red Dead Redemption and Red Dead Redemption Undead Nightmare
you unlock the first bull at level 50
there is no code you have 2 unlock it yourself :)
Go through the story mode and eventually you will unlock it.