His attacks are designed to test bases with weak tower coverage or exposed towers. They attack with around 75% of tower seeking monsters (Crabatron, Ichi etc.) and the other fourth are anything monsters. On players with very high levels, they will send multiple D.A.V.E.s along with Project Xs to deal devastating blows to an unprepared base. They prefer using tower seeking monsters but will always use seek anything monster so your resource towers need to be covered.