I'm having trouble getting the "Rewards Card" Achievement.

Earn a Loyalty Package from each weapon manufacturer.

AFAIK, that Achievement requires us to kill 100 enemies with each of the nine weapons manufacturer's weapons. I currently have 8 of 9 Loyalty Packages. I wish I'd not accepted those "success" emails from the manufacturers so I could track where I ame in this Achievement. But, I did, the emails are gone, and I can't find any easy way to track my progress. I've included the list of each manufacturer's challenges from the galaxy map's ("m" for the local map, "x" for the planetary map, and another "x" for the galaxy map) challenges list (Alt-L to get to Challenges or simply mouse click on the heading if that works on your system and then hit "Q" three times to get to the Manufacturers). Since the Achievement is to get 100 KILLS, I've bolded the challenges that apply and stricken through those that don't (I think). After each challenge entry, I've added what my current score is. I've also added up the "kill" numbers for each manufacturer and put it next to the manufacturer's name:

(299)

• A Death-Centric Orbit: Kill enemies with Atlas grenades. (105)
  
• Knuckle Puck: Tag enemies with Atlas tracker pucks. (0)
  
• No Escape: Tag enemies with Atlas tracker grenades. (87) <==
  
• Once Bitten: Tag enemies with Atlas tracker darts. (107)

(106)

• Junkheap Juggernaut: Kill enemies with COV heavy weapons. (0)
  
• Keep It in Family: Kill COV with COV weapons. NOT mutually exclusive from the following two items. So ignore this line. (42)
  
• Turn Up the Pressure: Kill enemies with COV weapons while overheated. (3)
  
• Warming Up: Kill enemies with COV weapons while not overheated. (103)

(1289)

• Burst of Inspiration: Kill enemies with Dahl weapons in burst-fire mode. (510)
  
• Going Loud: Kill enemies with Dahl weapons in full-auto mode. (290)
  
• Precision Above All: Kill enemies with Dahl weapons in semi-auto mode. (51)
  
• Through the Looking Glass: Kill enemies with Dahl weapons while zoomed. (438)

(119)

• Business Bombardier: Kill enemies with Hyperion grenades. (42)
  
• I Turned Your Bullets into Hate: Kill enemies with Hyperion weapons while buffed by an Amplify shield. (0)
  
• I'll Take That: Absorb ammo with Hyperion weapon shield. (0)
  
• Keep It Tight: Kill enemies with Hyperion guns with increased accuracy. (77)

(200)

• Bank Shot: Kill enemies with Ricochet bullets with Jakobs weapons. (25)
  
• Between the Eyes: Get critical hits with Jakobs weapons. (211)
  
• Fan the Hammer: Kill enemies with Jakobs pistols while firing from the hip. (102)
  
• The Old-Fashioned: Kill enemies with critical hits with Jakobs weapons. (73)

(103)

• Deadstream: Kill enemies with Maliwan beam weapons. (0)
  
• Elementary: Kill enemies with status effect with Maliwan weapons. (103)
  
• Futurekill/Deathsounds: Kill enemies with Maliwan charging weapons. (0)
  
• Shockwave and Awe: Kill enemies with Maliwan shockwave weapons. (0)

387)

• C-C-Combo Killer: Kill enemies with Tediore target combo reloads. (1)
  
• Good to the Last Drop: Kill enemies with empty Tediore reloads. (13)
  
• Trade-In Value: Kill enemies with Tediore reloads with over half clip. (93)
  
• Yeets Shoots and Leaves: Kill enemies with Tediore shooting turrets. (280)

(340)

• BOOM! Ker-SPLOOSH!: Kill enemies with Torgue weapon splash damage. (102)
  
• Howitzer Haymaker: Kill enemies with Torgue impact bullets. (139)
  
• Stuck On You: Kill enemies with Torgue sticky bullets. (56)
  
• The Flexington Fastball: Kill enemies with Torgue grenades. (43)

(103)

• Boomstick: Kill enemies with Vladof shotgun underbarrel. (105)
  
• Missile at Command: Kill enemies with Vladof micro-missile underbarrel. (2)
  
• Steadfast and Furious: Kill enemies with Vladof weapons in bipod mode. (0)
  
• Underslung Hero: Kill enemies with Vladof grenade launcher underbarrel. (2)

The problem is that I swear I got one of those Manufacturer emails from Tediore congratulating me on killing 100 enemies with their weapons shortly after starting working on their weapons. But, Tediore is the only manufacturer I'm showing as having fewer than 100 kills. Could I be misinterpreting things here? I'd hate to keep force using Tediore weapons since getting kills that "count" with them is extremely slow going. But, I don't see what other manufacturer's weapons I'm low on using. Could some of those "kill" entries be double-counted because they overlap others for the manufacturer? Specifically, the Jacobs' ones?

EDIT 1: I guess this was all for naught. I found a post that said progress in this Achievement could be tracked by watching the skins you have for vehicles. If you have a manufacturer's skin for vehicles, then you've gotten their Loyalty Package. I just checked mine and I've got all but Tediore's. So, I guess I'll just continue force-using Tediore weapons.

EDIT 2: From my wife's attempt to get this Achievement, under COV, the Keep It in the Family line can duplicate kills recorded under the following two lines. So, to find how many kills that count for COV, you can only add the Turn Up the Pressure and the Warming Up lines. Adding in the Keep It in the Family line will give you an artificially high count.

Also, regarding the vehicle skins as a check of progress, it's just wrong. Each vehicle type seems to come with a set of skins. I suppose if a certain manufacturer's skin is is not present in ALL vehicle types, that might indicate that manufacturer's Loyalty Package is missing. But, it's not a good metric.

EDIT 3: And, it appears that getting an "email" from a manufacturer congratulating you for killing over 100 enemies with their weapons isn't a good measure of this Achievement's progress. I just got two additional emails from Tediore congratulating me, but my progress towards the Achievement is still at 8 out of 9. I've updated, above, my Tediore numbers (they're now 1, 12, 23, and 39 in the list above), but they still only total 75. So, I'm thinking those emails might just be for finishing a tier in Loyalty program even though they specifically mention killing 100 enemies.

FINAL EDIT: Nope. It wasn't the Tediore. It was the Atlas. My wife got her Achievement when she had a mere 31 kills registered under her Tediore area. So, apparently, ANY 100 kills with Tediore weapons count. I then thought it was a problem of duplication of Jacob kill categories and went back to get over 100 pistol hip kills there. Nope. Finally, I used an Atlas SMG that tagged and fired smart grenades. At 87 of those (don't ask me why), I got the message and the Achievement. Why the developer can't be bothered to explain what's necessary for an Achievement, I don't know. Anyway, I've update my numbers in the list above and removed the strikethroughs on the Atlas tagging entries (I assume killing after tagging is necessary).