Here is a list of all the exclusive loyalty items for Worms Ultimate Mayhem (http://marketplace.xbox.com/Product/Worms-Ultimate-Mayhem/66acd000-77fe-1000-9115-d80258410afd?nosplash=1#LiveZone) that can be unlocked by playing certain Xbox Live Arcade or Steam games from Team17.


Worms™ (XBLA) (http://marketplace.xbox.com/Product/Worms/66acd000-77fe-1000-9115-d802584107de) / Worms™ Reloaded (Steam) (http://store.steampowered.com/app/22600/)
http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d802584107de/1033/banner.png (http://marketplace.xbox.com/Product/Worms/66acd000-77fe-1000-9115-d802584107de)
"Earn any achievement in Worms™ (http://marketplace.xbox.com/Product/Worms/66acd000-77fe-1000-9115-d802584107de) to unlock this item."


Cad Soundbank
Sci-Fi Goggles
Sci-Fi Hands
Time Flies
Worms™ Hat (XBLA) / Worms™ Hat (Steam)



Worms™ 2: Armageddon (XBLA) (http://marketplace.xbox.com/Product/Worms-2-Armageddon/66acd000-77fe-1000-9115-d80258410912) / Worms™ Reloaded (Steam) (http://store.steampowered.com/app/22600/)
http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410912/1033/banner.png (http://marketplace.xbox.com/Product/Worms-2-Armageddon/66acd000-77fe-1000-9115-d80258410912)
"Earn any achievement in Worms™ 2: Armageddon (http://marketplace.xbox.com/Product/Worms-2-Armageddon/66acd000-77fe-1000-9115-d80258410912) to unlock this item."


Christmas Beard
L33t Soundbank
Monster Bash
Sock Puppet
Worms™ 2 Hat / Worms™ Reloaded Hat



Alien Breed (XBLA) (http://www.xbox.com/Search?q=Alien%20Breed#Games) / Alien Breed (Steam) (http://store.steampowered.com/search/?snr=1_5_9__12&term=Alien+Breed)
http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410964/1033/banner.png (http://marketplace.xbox.com/Product/Alien-Breed-Episode-1/66acd000-77fe-1000-9115-d80258410964)

http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410a22/1033/banner.png (http://marketplace.xbox.com/Product/Alien-Breed-2-Assault/66acd000-77fe-1000-9115-d80258410a22)

http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410aa3/1033/banner.png (http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410aa3/1033/banner.png)
"Earn any achievement in Alien Breed Evolution (http://marketplace.xbox.com/Product/Alien-Breed-Episode-1/66acd000-77fe-1000-9115-d80258410964), Assault (http://marketplace.xbox.com/Product/Alien-Breed-2-Assault/66acd000-77fe-1000-9115-d80258410a22) or Descent (http://download.xbox.com/content/images/66acd000-77fe-1000-9115-d80258410aa3/1033/banner.png) to unlock this item."


Alien Breed Hat
Face Hugger
Klien Soundbank
Mauler Hands
Pesky Little Breeders



All items can be purchased for 0 credits at the item shop if the requirements are met.

The requirements for the PC version don't depend on achievements, it depends on whether you have Worms Reloaded or any one of the three Alien Breed games activated on your Steam account. The Worms 2 hat is changed to show Worms Reloaded, and... I don't know what the deal is with the Worms™ set since that game wasn't released on PC. I'm guessing it was unlocked for all PC users.

Pesky Little Breeders, Time Flies, and Monster Bash are versus maps. The hats are just caps with the game's logo on it (I think), except for the Face Hugger which is... as you'd expect.



I would also like to add that I utterly love the Klein Soundbank!

@Plasma Thanks for the info, I'll update the OP. So are the Worms™ 1 Loyalty Items (Cad Soundbank, Sci-Fi Goggles, Sci-Fi Hands, Time Flies and Worms™ Hat) included in the PC version? And are there any PC/Steam-exclusive items?

The Worms content is listed under Worms Reloaded for the PC version.

Klien soundbank is epic indeed, seems I totally need to get Alien Breed Descent now :[

I really like the Worms: Reloaded cap. I just wish you could position it like the other baseball caps. Also maybe in a future update they'll redo the textures on the hats to be less pixelated. I'm thoroughly enjoying the game, though :)

I wondered what the hell it meant by 'unlock an achievment in Evolution, Assault, Descent'

Great looks like i'll never unlock those ones then.

Hmm, I have unlocked achievements in Worms Reloaded and Alien Breed on Steam before.
Do I need to unlock one again to get those exclusives, or will it work retroactively?

Hmm, I have unlocked achievements in Worms Reloaded and Alien Breed on Steam before.
Do I need to unlock one again to get those exclusives, or will it work retroactively?

It seems that on Steam you don't need to unlock any achievements. Owning the games seems to be enough. Achievements need to be unlocked only for the Xbox 360 version.

Hmm, I have unlocked achievements in Worms Reloaded and Alien Breed on Steam before.
Do I need to unlock one again to get those exclusives, or will it work retroactively?
Aside from that I already said you just need to have the games, why on earth did you think you'd have to unlock another achievement after purchasing the game? How would that even work?

Aside from that I already said you just need to have the games, why on earth did you think you'd have to unlock another achievement after purchasing the game? How would that even work?

Because the xbox requirements somewhat sound like you do? More than likely though the xbox version is retroactive.

Now I feel bad for getting the Alien Breed game for free from Steam during summer camp event.