After losing a good chunk of yesterday and today to server outages on the Beta, I was finally able to log in a couple of hours ago and work on a new guide. I started to work on Inscription, but the recipe I'm stuck on is still broken. So I moved on to Engineering and I'm happy to report that it was pretty painless. It has only taken me 90 minutes and that includes taking notes and doing the mailbox shuffle between characters.
I planned for the worst, but luckily many of the blue items made by Engineers are granting multiple skill points. This helps quite a bit with the leveling process. There are a few spots where I was hoping to use an easier recipe, most notably the Goblin Barbecue. Unfortunately that recipe was green to me as soon as I trained it, which kind of bummed me out. The Heat-Treated Spinning Lure was yellow when I trained it, but I decided to include it anyway because the scope uses more difficult materials.
I also made a nice discovery - literally! The self-enhancement recipes that were removed from the trainers are now discovery items. I learned seven of the eight missing recipes while leveling up. It appears to be totally random, but occasionally you'll learn one of these while crafting something else.
I leveled Engineering on one of my premade characters, so I started at 425 instead of the current cap of 450. This is because my actual engineer is a Gnome, which skews all the difficulty ratings. Feel free to ignore the stuff below 450 if that doesn't apply to you.
Here's my recommended leveling progression for 425-525:
425-445: Handful of Obsidium Bolts (120 obsidium bars)
445-460: Electrified Ether (30 volatile air)
460-470: R19 Threatfinder or Safety Catch Removal Kit (12 obsidium bars + 4 alicite + 12 obsidium bolts or 20 obsidium bars + 20 obsidium bolts)
470-475: High-Powered Bolt Gun (10 obsidium bars + 8 obsidium bolts + 4 electrified ether)
475-490: Elementium Toolbox or Lure Master Tackle Box (60 elementium bars + 12 obsidium bolts or 45 elementium bars + 36 volatile earth)
490-495: Elementium Toolbox (15 elementium bars + 12 volatile earth)
495-510: Finely-Tuned Throat Needler (6 electrified ether + 12 obsidium bars + 15 hardened elementium bars)
510-521: Heat-Treated Spinning Lure (20 obsidium bolts + 80 elementium bars + 20 volatile fire)
521-525: Gnomish X-Ray Scope (2 dream emeralds + 2 hardened elementium bars)
Final Tally for materials used is:
154-174 obsidium bars
30 volatile air
4 alicite (optional)
140-155 elementium bars
12-48 volatile earth
17 hardened elementium bars (170 elementium bars + 68 volatile earth)
20 volatile fire
2 dream emeralds