The group didn't want to get anywhere near the stage 4 titan. It was as if they had been told to go up against a giant, and they saw no way that their involvement could make a difference. Even the Dark Zombies currently fighting were struggling.
Several used weapons to attack the legs, but when they struck it, the blows would just bounce off the hard armour. There were larger Dark Zombie members with giant clubs who managed to whack the sides of the legs, leaving a big ring each time.
This seemed to have some effect on the stage 4, but it still wasn't enough to break through the armour.
The stage 4 itself, despite its size, wasn't completely slow. It swung its arm, and the Dark Zombies would often attempt to warn each other, but one person was too slow and had been slapped to the ground. Immediately, his body went flying in the air, and as he hit the ground, his bones could be seen twisting and breaking in ways they wouldn't on a normal human body.