Contrary to all of its variants inflicting extremely high damage and DPS, Li'l Zyclone acts more as a barrier to cut the meatshield supply, to support this it sports high health, decent speed and a long burrow distance, as well as quickly reviving with 100% HP once.
Strategy
With a 333k health this little guy is going to be very good at his job: Cutting off your supply of meatshields by burrowing behind your main group of cats with a crazy burrow range of 1250. Actually killing him is like any other zombie unit and he does very little damage despite his large health pool and fast attacks.
The absolute best way to deal with Li'l Zyclone is to either stop his burrow with the regular cat cannon or force him to the surface with the Holy Blast upgrade for the cat cannon.
If that is not possible you will want to have reserve Zombie Killer units waiting to spawn when he surfaces. If those units have Crowd Control abilities such as Weedwacker Cat(Freeze), Ectoweight Cat(Knockback), Piledriver Cat(KB), Mighty Thermae-D-Lux(Fz), CAT-6 Siege Engine(Weaken) then they will be a big help in this fight.
If you don't get the zombie killer proc, he will respawn with full hp one time. He's dead for less than 5 seconds so you may get lucky and not have your units march past his puddle before reviving. If not, just rinse and repeat.
This enemy was made to be annoying. And it will be. But you'll get used to fighting it and you'll fall in love with his li'l bones.
Has the toughness of mother Yuzuri and the appetite, shyness, unsuitability and weakness of father Yuzuri.
Its favorite subjects are health and physical education, national language and resurrection.