This achievement is story-related and umissable. It will most likely be your first DLC-related achievement.
I will provide you with a rough walkthrough for this achievement. Since it is a story related achievement, I'll put everything in SPOILER brackets
*** Spoiler - click to reveal ***To get to the new DLC area you have to listen to the new Nuka world radio channel. Do so and you will be rewarded with a new mark on your map. Go there and and follow the quest markers. You'll reach a trail/ monorail that takes you to the new area.
Once you are there the quest, related to this achievement will begin. To get the achievement you will have to pass through a dungeon-like cellar that is jam-packed with boobytraps, trip wires, mines and such like. After you have found your way through the maze you'll come to an arena with the boss enemy of "the Gauntlet". Use the squirt pistol you received earlier and keep shooting at him with the strongest weapon you have in your inventory.
A few tips to survive the Gauntlet:
- I recommend being a high level character. Personally, I was lvl. 56 when I tackled it
- Use a power suit to go through all these trap filled areas. This will prevent you from dying if you miss a mine, trip wire or such like. It also makes the boss fight much more easy.
- Always keep your eyes on the ground ahead of you. This will prevent your character from loosing a leg or two and gives you the opportunity to grind some rare materials if you difuse traps.
- Quck-saving is your best friend here! Save as much as possible. Even if you screw up, wou won't have to go through all the nasty areas again.
If you need more help, refer to the video below:
(video credit: SEMPITERNAL XIX)
Hope this helps you guys!
Any improvements? Please let me know in the comments below!