Only units that actually cause concern is Devourers and Galeths plus sea giants.
It seems like Xenomorphs can't really handle tons of factions invading their planet from space which seems like it basically took the whole planet by surprise.
And what purpose does fungus serve? I cut them down without a thought because they add +1 pollution, so I'm curious what they do for xenomorphs.
And about Hives, why on earth do the Queen defend first?! That's like the worst possible move they can make. Because once the hive loses their queen, that hive is now vulnerable to attrition! Especially when the queen is needed to give birth to more bugs..
The queen need at least some bodyguards.
And then the rate of queen replenishing bugs doesn't simply cut it against the numbers of units invading faction's cities can produce. There is supposedly millions or billions of them from according to what I read in the manual with Terra Salvum visiting them. Assaulting an big hive should be at least a tough task. But sometimes, they will only have nothing but few random spitters plus a queen left as defenders because they burned all their drones to achieve nothing and couldn't even raze a city.
I have exploited the fact that Queen always defend the hive first because it's the strongest unit.. in my game today when I was conducting an invasion of 2nd continent from my first one by setting up preparations of opening barraucdas to confirm that ocean is clear and safe for transporting my soldiers. Then Strike fighters charged in and hit every single hive in a single turn on the shores that i planned to invade in few turns. Even barracudas can participate too, especially if the hives is right there on the beach. Then I have effectively halted their xenomorph growth while I still can keep on building soldiers until they're all ready to invade enmasse.
And then I invade. Xenomorphs lose. Just because their queens can be alpha'd first.
Honestly I feel bad for xenomorphs, they're more like native americans at this point where they just get punched then keel over and die.
Only Fungus is actually tough, they only can be killed by formers.
Imma try that Death level...
But on other hand, out of all the games I played yesterday and today in colonization era against xenomorphs.. Solar Dynasty has managed to die again and again and again to the xenomorphs. I think six times. XD On medium level of alien aggression.