Name: Borderlands 2 Mechromancer Pack DLC PC Steam (MAC OS X) (Steam)
Brand: 2K
SKU: KT-DE4A895285
Price: 1.79 EUR
Availability: InStock

This download grants the Mechromancer, a 5th playable character class who can summon a destructive robot named Deathtrap. In addition to this new class, this pack also includes bonus items which were included in the Borderlands 2 Premiere Club Pack, including the Gearbox Gold Gun Pack, a Golden Key, which unlocks rare items in the mysterious Sanctuary Loot Chest, and the Vault Hunter’s Relic, which boosts your gear-hunting fortunes.

Redeem on Steam

You need a Steam account and the Steam app.

Step 1: Open Steam and sign in.
Step 2: Open the Games menu, then choose Activate a Product on Steam…
Step 3: Enter the key and follow the prompts.
Step 4: The game appears in your Library.

Steam's redeem page Full guide for Steam

Activation notes from the publisher

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "MY GAMES" tab and start downloading.

Platform: Steam
Region: Global (listed as “REGION FREE”)
Type: Downloadable content
Languages: English, French, German, Italian, Spanish
Developer: Gearbox Software
Publisher: 2K
Release date: 9 October 2012
Genres: Action, RPG
Age rating: PEGI 18
Keyterminus catalogue no.: KT-DE4A895285