The discovery of void creatures exhibiting intelligence got the whole galactic community shaken to their core.
With every hunt the hunters go on, they come back with new discoveries. When they fight the void creatures, they don't just react and attack aimlessly.
They moved and evaded attacks they could evade and attack when they got an opening. Wanton destruction was not what they were about.
Low-level void creatures still behaved the same way, but that changed when Class D and above void creatures were introduced into the mix.
Then, the frequency at which each unit of a team went out became more frequent as some even lost their lives in the heat of battle.
Hunters had to always be on alert to stop incoming void creatures from entering their star systems.
As time passed with hunters pushing themselves on a regular basis, they began to notice their abilities took too long to deal damage and kill the monstrosities.