GodParticle
Member
No. You unlock all of the bubble shields around the scorch cannons to START the Heroic version, which drops down a second walker. Killing both completes the Heroic.
If you kill him at all before starting the Heroic, it just completes the regular version (you missed the chance for the Heroic). If you fail to kill both once the Heroic starts, you fail altogether.
edit: Emphasized all because you could put the charges into the shield generators and unlock just one of the scorch cannons, use that cannon to kill the first walker, event complete. No Heroic
Got it. I didn't even know there were harder versions heh