Fan Casting Borderlands

On a distant planet, a vast amount of dangerous creatures emerge after a harsh winter, but there is a beacon of hope for those that remain, in the form of a mysterious alien Vault carved in the side of a mountain. This Vault is said to contain vast stores of alien technology and secrets. The only problem is that the people who discovered the Vault were completely wiped out by some sort of protective force, with the only evidence of their discovery being a scattered radio transmission, proclaiming the Vault's majesty, but not its location.