New Dark Unit - "The Swarm"

The new unit will based on the idea of a Swarm of million Robotic Locust.
Cuz its a swarm and not a solid unit it will not receive damage from single hit defense like cannon or archer towers.

it will be a slow moving unit with allot of hit points and with out attack preference and it likes to consume walls it will only will move in a strait line from where it was released until it will exit the enemy base Area when it will get there it wil do 90 Deg turn every time until it will be destroyed

Unit Stats:
Housing space: 25
Build time: 35 min
Wall damage X8
moving speed: 10
Damage type: Splash Area
Targets ground units and buildings

LVL 1 Stats: TH8
Hit-Points: 3000 **Every 1000 hit points lost the damage will be reduce by 1/3.
DPS: 50 (walls 200)
Cost: 600 DE

LVL 2 Stats:TH9
Hit-Points: 4500 **Every 1000 hit points lost the damage will be reduce by 1/3.
DPS: 75 (walls 600)
Cost: 700 DE

LVL 3 Stats:TH10
Hit-Points: 6000 **Every 1000 hit points lost the damage will be reduce by 1/3.
DPS: 90 (walls 600)
Cost: 785 DE

** Explain:
Cuz its a swarm as the swarm get damage, the amount of units in the swarm is reduce.
so after every 1000 Hitpoint lost the demage will be reduce by 1/3
for exmple LVL 2 Swarm with 2000 hit points left will do 33 DPS and 400 to walls and so on.