This is an addon that requires the Embers of Rage DLC, it buffs the Whitehoof racial talents in several ways, here is a list of all the changes made:

Increases the death momentum charges gained by leveling "Whitehooves" from 1 - 5 to 3 - 7
Increases the Strength/Magic gained by leveling "Whitehooves" from 2 - 10 to 3 - 14
Increases the flat damage reduction of "Dead Hide" from 1 - 5 to 3 - 6, in addition to now scaling with Strength for even more damage reduction
Gives "Dead Hide" a passive 20% - 80% pin resistance
Lowers the cooldown of "Lifeless Rush" from 52 - 21 to a flat 25, as well as increase it's duration from 3 - 10 to 5 - 11
Lowers the cooldown of "Essence Drain" from 49 - 33 to 40 - 28

Should work perfectly fine with addons that make Whitehoof playable in the main campaign too.

As recently seen with the cults expansion, new classes are sometimes missing from addon campaigns due to load order. This addon solves that problem. It allows usage of all main campaign classes in all addon campaigns.

Adds a new subclass for tinkers. Galvanic Alchemancers bridge the gap between the roles of Alchemist and Tinker. Due to the nature of their art, Galvanic Alchemancers learn alchemy and magic that is associated with lightning, though they can study other fields as well.

Allows you to retrospectively add the Embers DLC to an Age of Ascendancy campaign that was started prior to activating Embers.

To add Embers to your existing AoA save game, you need to edit the desc.lua file in your character's save directory: In the "addons" property, add 'orcs' (the Embers DLC) and 'retro-orcs' (this addon).

What this addon does is initialize your character's default steam values (the same way Embers-created characters are). Without those values being initialized, you would otherwise get an error with the tinker escort reward because your AoA-created character's steam values are nil.

Adds class-appropriate weapon schematics to the birth definition of Tinker classes. Requires Embers of Rage DLC.

Based on a suggestion by Mel.

Allows usage of all races in all campaigns. This includes addon and DLC races. Should remain compatible with future updates and DLC, the transition from 1.4.9 to 1.5.10 did not require any changes, and I doubt any future transitions will.

Currently includes support for:
Every DLC and race addon that doesn't have a weight over 9000 million.

Changes the descriptions of the six talents used in making tinkers to show the levels required to make each object. I was sick of looking them up. I'm not sure what's going on with the double-rectangle symbols showing up on newlines in the descriptions, if anyone knows a way to remedy it let me know.

Tweak to make the APE also generate Fortress Energy, for using tinkers in the main Maj'Eyal campain. Also lets Adventurers start with an APE and equipment for tinker classes, even if you haven't unlocked that achievement the normal way.

Note: this does not auto-extract gems with Stone Alchemy.

Adds to glutton class, reorders class generics, and mods glutton talents. Requires orcs dlc for new steam resource. Requires Glutton mod https://te4.org/games/addons/tome/glutton.

Slightly improves and expands the rewards available for bringing Yeti muscles to the Old Psi-Machine, to make build diversity in Embers closer to that of the main campaign:
-Staff Combat and Mindstar Mastery are now granted at 1.2 mastery
-Stone Alchemy, Light can now be learnt at 0.8 mastery, but locked (need category point)
-Hexes can now be learnt at 1.0 mastery, locked. If it is already known but locked, it will be unlocked instead.