This enemy has large range and decent damage but his low movement speed is easy to stall him.Just use Titans and Lions to beat him or any tanky and speedy units.
Time between attacks
Base Destroyer (deals x4 damage to Cat Base);
Omni-Strike (Effective range: -2500~2000)
A good strategy is to use units like Vaulter Cat/Polevaulter Cat and other units with a long range that can reach the base from far away. Other than that, there isn't a good strategy anyone has found (yet) than just using long range units and meatshields.