With the appearance of the king rank killer earthworms and the tunnels they had made, it was clear that underground wasn't safe. So 2 teams of special ops demigods were teleported not too far from the tier 2 king rank armored hippos.
One of the 5 demigods in each team was enough to take care of a king-rank armored hippo, while the others were meant to deal with the beasts and other king rank beasts around them.
The only reason they had a chance of killing the armored hippos was that most of the beast army were already attacking the wall, and for them to turn back would give the humans a breathing space and leave the beasts open.
To ensure that their mission was successful, some of the mana cannons were to support them in their attacks, and although it would make things harder for those within the city barrier it was very necessary.
Had power issues, so I can only post 1 today.