Iguva, Davernoch and EvilEye VS our real world

I was bored and this idea came to my mind. I don't know if it's an interesting topic or not, but here's a rounds:

1) Only Iguva VS 8 billion of humans (bare hand)

2) Only Davernoch VS 8 billion humans (bare hand)

(If humans somehow has no changes, they can use knifes and other cold weapons in rounds 1-2)

3) Davernoch and Iguva VS humanity (bare hands/cold weapon)

4) Davernoch and Iguva VS humanity with Firearms (Pistols, submachine guns, shotguns, machine guns - no other technologies or cars).

5) EvilEye VS humanity with Firearms (no other technologies or cars)

6) Trio VS humanity with everything it has expect nukes

The places of the battle:

1. Undeads and our world humans appears on the territory without any buildings or terrain irregularities some kind of plain or desert

2. Battle takes its place in a huge megapolis

3. Battle takes its place in a huge forest

The distance between the opponents is always 1 kilometer, people surround the undead when they appear.