Remember agentX? The one whom we called nature, fate, reality, in UAC, is the hell portal. It sends you to another dimension called Hell where only demons monsters masterminds and Deag Garv live. They can’t be killed, activeX UAC s technology behind teleportation across space time interdimensional driven. You must jump from our world to their world, enter hell, find the crucible, close the well, which fuels UAC. This portal must be accessed, whenever the demonic invasion begins, and used to travel inter dimensionally, then using the crucible close the well, get back to UAC, thus contain the invasion. That would give you some time to heal and relax until Sam gets control back, and starts the invasion again.