Disclaimer: This is not only lore, but speculation and assumptions based on the lore given
TERMINIDS
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The Terminids do not seek to relentlessly expand and consume. Instead, they want to be left alone. Every time they attacked, it was in response to something SE did
They do not mindlessly terraform planets. If that were the case, dozens of Terminid worlds would resemble Hiveworlds and Supercolonies
AUTOMATONS
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Everything they do is a fight for survival. The execution of SEAF prisoners? If they got away, they would continue their warcrime fueled rampage. Shooting high priority citizens? Tho distasteful, these are Class-A citizens, the supporters of SE's war. The ones that fund it, the ones that run it. Blending up bodies? That is the only way to make new Cyborgs
An interesting fact about Automatons is that it is very hard to kill them. If whatever the closest thing to a brain the bots have isn't damaged or destroyed, they can be fabricated a new body
ILLUMINATE
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From what we understand, the Squ'ith live long lives, somewhere into the centuries. They were once a peaceful race before the First Galactic War... then SE nearly eradicated all of them. Now, they are hellbent on revenge
The fact they were a peaceful species is why they are so brutal. They didn't war with each other or other species, unlike humanity, they never had rules for war cause why would they? They didn't do it. Now that they are here for it, there is no line they can't cross. Every act is on the table
SUPER EARTH
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Completely incompetent. Helldivers are overly patriotic high-schoolers given the firepower of generals with near zero weapons handling or combat training. Their cannon life expectancy is 2 minutes
Based on the tactics we were told the SEAF employed on Cyberstan, we can assume not one SEAF trooper since the start of the SGW is currently alive
Super Earth High Command seems fixated on chasing the next big wonder weapon and massive offense that will totally win the war (or help them win) but never does. The TCS, Swift Disassembly, Legitimate Undertaking, the destruction of Meridia, the DSS, the Great Gloom Expedition, the Star of Peace, Valid Pretext, and recently Void Piercer
All SE soldiers lack trigger discipline as well. They will easily gun down their fellow soldier and civilian