Yes. So far they've been able to partially open the Gates to Hell. The dimensional walls between here and there are being eroded away by the CERN facility's operations. Once the portal is fully open it will take a literal Act of God to finally close that and that won't happen for close to a decade... at a minimum. Imagine that a tsunami of demons for consecutive years... Humanity won't stand a chance whatsoever... nor the other lifeforms on Earth either.