Before the attack at Ethan's side of the wall:

5 groups of teens that consist of 7 members patrolled The West side of The North. Tyler is near the wall as he waited for the perfect opportunity. The 5 groups left the weak side of the wall. "Perfect~" He whispers as he jumps high in the air. 

A teen spots Tyler as he shouted "HERE!". All of the groups goes to the teen. Tyler smirks as shadow thread comes out from his back and pierce the teen's chest. The teen gasp as he drips blood from his mouth. 

The groups tried to save the teen but it was to late as the teen exploded as flesh and organs flies up in the air. The groups stop and watch their fellow teen burst into flesh. Some landed on the groups, blood lands on Tyler's body. 

Tyler lifts his right arm as he licks the blood of seductively "Tasty~". He said as the groups shivered at the voice thinking that the same thing might happen to them. One group ignored it as they jump towards Tyler with their weapons out.

 Tyler sighs as shadow threads began slicing the group into pieces "Pathetic" He said coldly as the group is now into pieces of flesh falling down in front of him. The remaining 4 groups pulls out their weapon as they went into a defensive position.

Tyler lands in the middle of the Four groups. Two groups were on the right side of him and the other Two were on the left. Tyler looks at the left then looks at the right slowly. He creates a sword, the same sword when he attack Bailey. 

The Four groups takes one step back. Tyler puts the end of the sword in the ground as purple electricity comes out from it. The Four groups confused gripped their weapon and eyed on Tyler. In just a few seconds, the electricity comes out from the ground in-front of the Four groups as it goes high up in the air. 

All groups shocked leaps backwards to avoid the electricity. They landed a few meters away from Tyler. "Enough of this!" a teen said who is the group of leader of group one. The teen charge towards Tyler as well as group one.  

Tyler looks at them with a blank expression as threads of shadows comes out from his back going towards group one. It's leader dodges all of it, the teens deflected it by their weapons but grazed a little bit. 

Tyler pulls the sword up as he aimed it at the group leader. Purple electricity comes out from the sword heading towards the leader. He stops then jumps high in the air. The electricity ignores him as it went to the teens that are still deflecting waves of shadow thread. One teen got hit but the electricity didn't stop as it ricochet to all of the teens.

 All of the teens scream in pain and agony. The threads pierce their chest as they still scream in pain that some knelt down, some fall to their side. The group leader stops as he turns his head around seeing his fellow teens slowly dying, screaming in pain. Tyler smirks as he looks at one's group leader 

"Had enough~" He teases. The group leader turns his head facing Tyler as he growls. He dashed towards Tyler, stops then jumps high in the air, pulls out a lance and tries to stab him. Tyler pulls the sword out of the ground as he deflected his attack and pushes him backwards over the wall. 

The Three remaining groups looks at Tyler. All of them dashes towards him. Tyler deeply sighs as he stabs the ground with his sword. Waves of purple electricity comes out from the sword as it goes to the three groups. 

They were caught by it as they scream in pain. Tyler lets out a dark chuckle as he heard the pleasuring sounds of teens screaming. Some collapses on their side, some drips blood from their mouths. 

The purple electricity stops as shadow threads began to slice all of the teens into pieces. Arms, legs, heads, insides flew everywhere around the wall. Some lands on Tyler's body. He looks toward the main area of The North. He taps his forehead and shook his head "Now~ We fly North~" He said as he jumps high in the air, transforms mid air into a shadow as he goes deeper in The North.

The group leader survived as he saw Tye jumps in the air. "I have to tell Ethan" He whisper shout. He goes to Ethan's side of the wall. He lands as Ethan and Nathan goes to him.T he teen panted as he kneels down in one knee. "What happen?" Ethan said as he heals the teen. The teen looks at them and mustered up his energy to say "West...Side...is...breached..." 

(youtube.com/watch?v=hq824hrfCuc)