you will meet a slaver that won't let you
he will give you a mezrotron slave red
in big town go back to paradise falls and go in
wait a bit of time [it takes a long time so be patient] pickpocket forty for a key to open the cage talk to red and then the slaver at the entrance to get 250 caps each time you talk to red
To climb this ledge, jump on the ledges and press forward as much as you can. Save your game and reload this savegame. While the game is loading, rapidly tap jump and press forward. If done correctly, the game allows you to jump while you’re standing on the ledge, and you’ll climb a bit higher everytime you do this. It won’t work everytime, and you might want to change direction every now and then, but you’ll eventually reach the top.
Simply head past the sattelite towers, ignore the glitchy terrains and move back to the beginning of the area while staying on the higher ground. The Tesla Canon can be found on a table with three ammo boxes next to it. While it’s pretty much the same device as the Tesla Cannon, it looks like a Missile Launcher and expenses Missiles as ammunition.