Sharpshooter
Rear Admiral
Regarding SM3, mission 10 is beatable... Just read the guide I posted. Mission 16 is also beatable, it's just that you have to quit the game once you reach the Austin Nav. So there shouldn't be any major bugs.
Going from the WC 3 manual stats, the Tachyon deals 70 damage whereas the Plasma only deals 67 at a higher energy consumption, lower refire rate and shorter range.
But I think the Plasma is sexier than the Tachyon.
I recently noticed that the Concordia-Class carrier in Speradon is pretty much immune to leeching. I guess the mission designers didn't want the mission to be too easy.
Say, is there any way to notice that you are damaging the carrier's engines? They seem to keep the same colour even when they're damaged.
By the way, I've noticed that you can see the carrier's engines explode when you've damaged them enough... but it seems you may also have to do 50% damage (or more) to the carrier in order to actually win the mission (destroying the engines and the turrets isn't enough, apparently).