Closed beta keys
You can reg Here
6HLRW-B7XM3-3KNWL-XBT6A-46HMC
6SC23-9SSCE-ROE4U-NYEFY-P3AGN
WYXER-SRHNA-MUH3U-4RAWO-LS7F6
XSM77-FY4N6-AJF2J-3P4EJ-XNRSX
X2FFS-7MYGR-PCHDK-RG7WT-6GKH4
(It's not yet out so you cant play it right away)
Steam codes
Sanctum 2 - D6OCK-DKNWB-7HFLL