[quote=GingerBoi123]
Sorry, it just seems that anyone who goes against the imperium is gonna get stomped pretty quick. Especially if most of the military is pretty much impervious to other weapons as you have got the highest military grade weapons. I may come back around but for now, I'm pulling out.
[/quote]Imperium's firepower and weapons are pretty much medium grade in their setting.
They go for quantity over quality.
Their only special feature is the tachyon beam weapons and those are only broken against low tier/hard SF type defenses.
Otherwise the only difference is that the beams reach a certain place faster than light. Which is actually pretty common in space operas if you take attention to the details.

Anyways, if somebody doesn't want to deal with the Empire they just don't need to be in their neighborhood.
The Empire's method of faster than light travel is similar to the Alcubierre Drive which warps space thus allowing an STL vessel to seemingly reach superluminal speeds.
Even with that they're fairly slow, traveling roughly a few lightyears a day.
This means via their standard drives to reach a civilization on the other part of the galaxy they'd need to travel for centuries.
Really, getting scared because a large NPC civilization is actually strong?
This game isn't just about space battles or duking it out with another race.
You have to actually use your brain. Or jut go with the flow and enjoy governing your space civ.

EDIT: Are you perhaps referring to the part where I mention imperial soldiers wear powered armors that can protect against less advanced weapons?
Really?
That's pretty much just how the advance of technology works. Their armor can protect against primitive firearms and less powerful energy weapons because otherwise they wouldn't be wearing it. A well-placed shot from advanced infantry weapons like phasers, blasters, railguns or whatever would take them out because there's no reason to design a weapon which cannot threaten an armor with comparable tech level.
Seriously I don't know what's your deal here.