For the first time and ended up beating it at level 23 (no mods or blah) within 20min ish? I only shot at what was red on the radar. I found myself being attacked by Joshua Graham in a cave, I blew him up with explosive 50. cal rounds.. Then I make my way up to get the map as the quest directed & ended up one shotting Daniel in the face.
Then I got the map and back tracked straight out of Zion.
The End
Ok so that was serously how it went, obviously something went wrong somewhere and I will replay it again if anything just to get the .45 pistol. Hopefully the story is good will see, but lol what a great first impression.