When fighting the manticore a good strategy is bring in high level Rex's with good saddles and circle the manticore it then becomes pinned allowing you to kill it without it flying all around .... watch out for the poison it shoots at you though it will kill you off your mount like the poison wyvern ..

It's low on hps when golems come

Bring a gas mask to avoid getting killed of knocked off your tame

Mission failed, we'll get em next time