Read through and make sure you've followed everything!
Through promotional trading cards, a website, and packaging for the limited edition version of the game, 27 upgrade codes for Destiny have so far been discovered that can be redeemed on Bungie.net for various rewards. Register on the site, if you haven't already, and link up your PSN/XBL account(s) before entering these codes to ensure you don't miss out on anything.
The Grimoire cards can be viewed onBungie.net once unlocked, whereas the emblems and shaders can be collected from the Postmaster at The Tower after you've claimed them--if you were playing at the time of redemption, you may need to log off and back on again before they appear.
These codes have no restrictions and can be claimed by everyone--enjoy!
Codes are as follows
Promotional Trading Card Codes (Unlocks Grimoire Cards):
01: YKA-RJG-MH9 (Class: Warlock)
02: MVD-4N3-NKH (Class: Titan)
03: 3DA-P4X-F6A (Class: Hunter)
04: TCN-HCD-TGY (Fallen: Rixis, Devil Archon)
05: HDX-ALM-V4K (Destination: Cosmodrome)
06: 473-MXR-3X9 (Enemy: Hive)
07: JMR-LFN-4A3 (Destination: The Ocean Of Storms, Moon)
08: HC3-H44-DKC (Exotic: Gjallarhorn)
09: 69P-KRM-JJA (Destination: The Tower)
10: 69P-VCH-337 (Exotic: The Last Word)
11: 69R-CKD-X7L (Hive: Ogre)
12: 69R-DDD-FCP (Destination: Valley of Kings, Mars)
13: 69R-F99-AXG (Enemy: The Fallen)
14: 69R-VL7-J6A (Exotic: Red Death)
15: 69X-DJN-74V (Enemy: Cabal)
16: 6A7-7NP-3X7 (Destination: Shattered Coast, Venus)
17: 6A9-DTG-YGN (Vex: Minotaur)
destinyplanetview.com Reward Code (Unlocks Emblem):
01: 7F9-767-F74 (Emblem: Sign Of The Finite)
Limited Edition Hidden Codes (Unlocks Emblems and Shaders):
01: FJ9-LAM-67F (Emblem: Binding Focus)
02: JDT-NLC-JKM (Emblem: Ab Aeterno)
03: JNX-DMH-XLA (Emblem: Field of Light)
04: 7CP-94V-LFP (Emblem: Lone Focus, Jagged Edge)
05: JD7-4CM-HJG (Emblem: Illusion of Light)
06: 7MM-VPD-MHP (Shader: Double Banshee)
07: RXC-9XJ-4MH (Shader: Oracle 99)
08: X4C-FGX-MX3 (Emblem: Note of Conquest)
09: A7L-FYC-44X (Emblem: Flames of Forgotten Truth)
Still looking to buy Destiny? pick it up on the PS4 or Xbox One for £25 / £23 on the PS3
Thanks to ettienem1001 and happy hunting!