User blog comment:Linathan/Squad Spotlight: Frontier Hunter/@comment-26258826-20150614220126/@comment-26140304-20150614220509

There are always ways to get around Terminus and it's much easier if you just pay attention to three-turn killing all of the stages. With damage mitigation, you shouldn't have much of a problem surviving the attacks that the enemies throw at you.

If you lack the units mentioned, using four Larios and a mitigator with a Raaga friend works fine, despite the loss of elemental advantage. Lario can be farmed in Beings from the Bush in Lizeria's The Impassable Marshlands.

Hope this helps! :)