Here's an initial review.



Unusual to see a Mirialan high-level Sith. Interesting.


We had to look up some comparative materials to give a proper review of the section on the Force. The initial impression, however, was “that’s [i]a lot[/i] of known techniques.

The description for mastery of a talent reads as follows:
[quote=Guide to the Force, on talent mastery]There is little more to be known about the technique. Not only does the user have intimate knowledge and understanding of this, but he or she knows practically every use and exactly how to teach most others.
There are hardly any who reach this level of skill.[/quote]
Additionally, the relevant part of the description for a regular master (no innate talent) reads as follows:
[quote=Guide to the Force, on Learned Mastery]This level of skill is such that few ever reach it, as it requires several decades of dedicated study and practice to attain, as well as study of more esoteric and rare sources of knowledge.[/quote]
With that in mind, we can continue. Your character hasn’t only mastered an innate talent, which would be impressive on its own for someone of his age, but he has mastered [i]five[/i] innate talents. And he has reached the well-trained talent level for another five, and advanced training on five more.
[quote=Guide to the Force, on advanced talents]Usually takes at least a decade with a teacher who has mastered it to reach this level, if it is ever reached.[/quote]
So, even ignoring the other abilities, he has spent five decades studying the advanced techniques, at least as much again studying to become well-trained with five talents, and he’s spent the equivalent of a century or more to master five talents. All before reaching the age of fifty.
Considering that he is part of the Sphere of Military Offense, his level of studies doesn’t make sense. If he spent every waking moment of his life, both in his academy years and afterwards, he would not reach these levels of skill in that many fields. Innately talented masters are extremely rare individuals. The difference between a “regular” mastery and an “innate” mastery is that the latter goes several steps further, studying every single nuance of it. It is highly unlikely that there is anything that can be done with a technique that an innate master cannot do.
For comparison, Darth Theya Katherion, who has spent decades in exploring the nuances of the Force and the Dark Side, has mastered telekinesis and one or two closely linked sub-branches. While we haven’t defined whether it was an innate talent or not (we should fix things like that), the feeling we have of her is that it is not an innate talent. Darth Theya has about 120 years of life more than Darth Embrus, yet she is clearly vastly less powerful in the Force than you’ve made Embrus. See the issue.
We also compared with another character built in the same era and using much of the same material (Sundered Echo’s Darth Nyiss), and she was, with her lower age (59-65) even weaker, even though she too is older than Embrus. 
By the age he is at, if he’s spent especially much of his time using that, perhaps in battle considering his Primary Sphere of Influence, he could perhaps have reached mastery in one technique, with near-mastery in something closely related. 


Remember, creating a Darth is not just about pumping in power and skill in all sorts of fields until you have something that can defeat pretty much anything else. It is creating a character with a complete story, with everything built around it. While darths generally do have a “favorite” field, in order to deserve the rank the Sith in question has to have a wide-reaching power base, so that they can be sure that others will not easily outmaneuver them.
As described in the Sith Guide, there are a number of requirements for the Dark Council to grant someone the rank of Darth. While not all must be present, some are mandatory and most must be present.
[list][*]The Dark Council must see the need for a new Darth.
[*]The prospective Darth must have a vast power base, with influence at the highest levels of the Empire.
[*]Good relations with at least one member of the Dark Council
[*]No enemies on the Dark Council
[*]The Sith’s numerous underlings should include some that help balance out most of the prospective Darth’s major flaws
[*]He or she must have sufficient prominence in the Empire to be of use to the Dark Council as a Darth.
[*]His or her grasp of the Force must be vast, significant enough to stand out from the rest, though it need not cover all aspects possible. A warrior won’t need to delve deeply into alchemy, the field of telepathy or such 
[*]He or she must, in addition to a power base and underlings, have significant resources at his or her disposal. 
[*]The Dark Council will not promote someone who cannot keep his/her enemies in check, either through careful manipulation, or elimination.[/list]


We think you have a good start on this sheet, but there are many gears that aren’t connected to any other gears in what should have been a well-working machinery.
Later parts of the sheet describe him as a Sith with interests primarily in two fields:
Everything to do with lightsabers and their use, especially in combat. 
Tinkering with technology and improving it.
We’re not counting the hedonistic hobbies, as those are just casual entertainment.

Other than in the Force Power section, there is nothing in the sheet to explain his extreme level of study of the Force. He would make a powerful combat/war-focused Sith Lord, but without [i]heavy[/i] modifications, he doesn’t even remotely have the background to work out as a Darth. His climb through the ranks is a bit too meteoric. Remember, a Sith Lord is equivalent in power to a Jedi Master, but has political power and resources far beyond those of a Jedi Master. As stated in the Jedi Guide, a most Knights undergoing Master trials are at least 45 years of age.
As such, we would recommend you adjust the character to a Sith Lord, cut heavily down upon the Force knowledge, adjusting it to fit better in with his specialization as a warrior with a bit of technological tinkering as flavor. 
There is nothing in the sheet that we could see justifying his deep-delve into telepathy.
You could either have his master adjusted to a Sith Lord and keep the inheritance stuff (adjusted to lord levels, of course), or you could designate that his master is still alive and that he is the favored heir, possibly with his elderly master already preparing him to eventually take over. 
There’s a lot of great stuff in your sheet, but it is not a functional Darth.

In any case you should expand considerably upon his flaws and failures, as well as include creative punishments for failures. When punishing an underling, a Sith Lord or Darth will generally pick something he or she knows will feel as punishment to the underling, even as it educates them and is generally related to the failure. 
Plain torture, for example, wouldn’t be the “wise” punishment for military or diplomatic mistakes. It would, however, be the sort of punishment a sadistic Sith might use to teach how to properly interrogate a prisoner without killing it.