It would need a lot of balancing.
"Mostly immune to EMP, taser stun, radiation, and electric shock*"
Nope, that's downright broken.
"Rapid regeneration of brute and burn damage when at high energy"
So they can just carry a bluespace power cell for almost infinite healing?
"Very slightly faster, but this is not needed"
Even if they are just "very slightly faster", it actually matters.
"Breathe oxygen, but perform better with more present O2"
Perform better how?
"Alien, energy-based blood can shock nearby people and cannot be transfused; must regenerate by being exposed to high energy levels"
That's arguably a disadvantage.
"Use a lot of energy; must be constantly managed"
APCs are almost everywhere, so that's not too much of a disadvantage.
"High energy will regenerate health slowly"
That contradicts "Rapid regeneration of brute and burn damage when at high energy".
"EMP damage, shock damage, radiation, and tasers will add energy and can hold a Qi’ over their limit; this stuns them and can kill"
Those damage sources can also heal them.
"Immune to all chemicals except for acids"
"Cannot regenerate from toxin and oxyloss damage by energizing"
So how are they supposed to regenerate toxin and oxyloss damage?