Snapping Pincers	It tries to bite you with its pincers if you get to close: simply keep moving to avoid this attack.
Body Slam	Rises up and crashes down with its body and feelers causing radius damage: Unless you're quick enough to see this coming and use defend, it'll be very hard to avoid this attack.
Sand Blast	It'll spew poisonous breath straight out in front of itself that has a fairly narrow focus and can sometimes petrify you: He's quick to the punch in delivering this attack, so if you see smoke coming out of his mouth, move aside quickly.
Blast Laser	Its final attack is a giant laser that pretty much covers anything in front of the Antlion: To avoid this attack, its best to run around behind the brute and attack him; his laser won't usually reach you there.

Later Cycles: Nothing changes much other than the Antlion getting stronger and faster with each cycle. It'll be hard not to take a lot of damage in this battle. In later cycles, Rock and Electric Scorpions join the fray and make this battle lethal. Destroy the minions before re-focusing your attacks on the Antlion or you'll be dead before you even know what happened.