How to Get Insurmountable Skullfort?

It can be obtained from exotic engrams drops from enemies and Public Events, by completing Weekly Milestones such as Flashpoints, Shaxx's Call to Arms, Nightfall Strikes, and Clan XP Rewards, or by collecting tokens to level up vendors. If you are lucky, you'll get it as a reward for doing one of these things.

Is insurmountable Skullfort good?

An Insurmountable Skullfort has just been a good time in Destiny since it was first introduced to the game. As a Titan, you generally enjoy punching people and are willing to risk life and limb to make that happen.

What does the helm of Saint 14 do?

Helm of Saint-14 is an exotic Titan helmet in Destiny and Destiny 2. It belonged to the legendary Guardian Saint-14. The Helm benefits the Defender Titan subclass by blinding any enemies who walk into Ward of Dawn.