Recently, the authors of Warhammer 40,000 Space Marine 2 introduced a small update 10.2. It included a number of technical fixes, as well as made changes to the balance.
The number of Chaos Spawn in packs has been reduced and "now corresponds to the number of Tyranid Warriors." It was also decided to increase the damage of Heroic Chainsword heavy attacks by 15% and revise the basic weapon characteristics.
The developers also warned that a pop-up window will appear at launch, notifying you of a change in the ESRB rating:
"Please note that this update to our rating is intended to correctly reflect what has already been in the game for several months. The monetization system has not changed and is not planned to change."
The full description of patch 10.2 for Warhammer 40,000 Space Marine 2 is available at the following link.