i believe level 24 because im a level 28 right now and i just got the tomahawk a couple of levels ago so glad i helped :)
Yes. Just look at weapon challenges, and there should be one if you have a tomahawk. I have one and it's awesome.
You simply aim at the bats, and throw them.
Yes, you must download extra content from the internet in order to use tomahawks.
you do not level up on single-player free roam on Red Dead Redemption.
by nutshotting the zombie on level 3
You unlock them as you level up through the red dead redemption multiplayer
well all the guns idk all but some one is Winchester repeater half shot gun cattleman revolver tomahawk knife and idk anymore
do the missions which it says in your journal
Level 40.
Level 50, or Legend 1.
You unlock the mount Zebra at the highest level in multiplayer, which is 4th Legendary level 50.