Offense: This is a fairly cheap and very effective unit. It can target both air and ground targets and can even kill a Silent Swan very effectively. As long as the enemy doesn't have a few strong tanks then this should be able to go through most of the enemy team single handedly. Best to deploy in swarms to overwhelm the opposition.
Defense: This things only natural predator is the Common Interest which handles these with relative ease. A level 20 version is almost as powerful as a level 50 Refusal so anything over level 20 you need to gang up on it with multiple maxed UR tanks if you don't have the Common Interest. Artillery (Especially the Trishula) works if given a large enough meat shield for support. The Styx helicopter will win a 1 vs 1 usually but will take some damage. Using multiple units to take these down is your best bet as it will take a little while to blow through a heavily armored unit.