Borderlands PC Cheat
Super Gamer Dude
Borderlands Hints Invincible Jump
At any time in the game whenever you face an enemy that can jump or leap to attack you just jump when they jump and you won't take any damage.
Borderlands Cheats God Mode
Open WillowGame.ini in My Documents\My Games\Borderlands\WillowGame\Config\ and search for "bDemiGodMode." Change the line to bDemiGodMode=true. With this on, you can't go below 1 HP.