Beyond Light includes six new exotic armor pieces, two for each class.
Each class has a new exotic helmet and new exotic gauntlets.
How to Get Icefall Mantle
Icefall Mantle is the new exotic gauntlets for the Titan.
It has the trait Glacial Guard: Replaces your Barricade ability with a personal armor reinforcement that absorbs a small amount of damage. While reinforced, you are slowed and Barricade does not recharge.
In order to get these gauntlets, you will need to complete either a Legend or Master Lost Sector solo on Europa or EDZ.
It has to be a Lost Sector that has Exotic Arms Armor listed as a possible reward. These Lost Sector’s rotate daily; there will be one Legend and one Master.
The Legend Lost Sector has a Recommended Power Level of 1250. The Master Lost Sector has a Recommended Power Level of 1280.
The exotic drop, which you have to be solo for, is a rare drop on Legend and a common drop on Master.
As you can see in the image below, when Concealed Void is either of the dailies, you have a chance of getting Icefall Mantle if you complete it on your Titan.
Since you have to complete it solo, make sure you are familiar with the basic Lost Sector and enemy type in it, and then examine the many modifiers that Legend and especially Master throw on it.
You will have Champions, so make sure you have mods from your Artifact to best handle them.
When you break the shield or overload or stagger them, swords are still really good to take down Champions efficiently.
As you are not guaranteed to get the new exotic, be prepared to run it multiple times. That’s why I wouldn’t recommend attempting it until you are close to the Recommended Power. You don’t want to spend an hour slogging through it and then not get the drop.
If you do get one to drop but don’t like the roll, you can complete it as many times in a day as you want to try and farm.
Do note though that once you get the new exotic the first time, your pool will then include every other exotic helmet as well. (UPDATE: It was brought to my attention on Twitter that the new exotic is not guaranteed to be the first exotic drop you get, meaning you’re going to have to be super lucky.)
If the Lost Sector list Exotic Helmet or Exotic Legs as the potential reward, then you obviously can’t get Icefall Mantle from them.