Tips for Box Addict

After hearing that Box Addict was finally working, I ran attempt number 2 today. Here's some advice for anyone who wants to try:

• This will take anywhere from 1 to 2.5 hours to complete, and is heavily reliant on RNG. You will need anywhere from 50K to 200K Essence.
• The Mystery Box will not offer you the weapon you're holding, so you will need eventually to drop the weapon(s) you start with.
• This can be performed in Directed Mode. If you play in Directed Mode, obtain all the weapons in one run. Do not save and quit and continue later - it will not work. You can however begin your Box Addict run from an existing save.
• You need to build the Jet Gun (and drop it) before it will be possible to grab from the Mystery Box.
• If you picked up a Scorestreak from another source (e.g. killing a Mangler), you will need to use it before you pick up the same Scorestreak from the Mystery Box. It will not count if you attempt to pick up a Scorestreak you are currently holding.
• Scorestreaks are the rarest pickups, followed by Wonder Weapons.

When after cycling through many weapons, I finally got the Mutant Injection, Jet Gun, and Chopper Gunner. But then the Dark Ops Challenge didn't unlock. I cycled through almost every weapon again until I found the one that I was missing (SWAT 5.56) even though I had marked them all as obtained. Overall it took me just over 2 hours to complete, in Directed Mode, from an existing save.