How to Earn the Kappa Container in Escape from Tarkov - Cakeboost Guides
Kappa Secure Container (How to Get?) - Off-topic - Escape from Tarkov Forum
DIY Gamma Case Decals no Case Inc Tarkov - Etsy
I solved the Kappa problem. Carrot Container replaces it and Kappa is a 71 unlock. Donut because it's hilarious... (Carrot because it's the carrot on a stick to keep people questing!) :
Everything About Secure Containers in Escape From Tarkov