Art of Sub Warfare bug (I think?)

Hi! This issue should now be fixed as of the hotfix we released a moment ago: https://store.steampowered.com/news/app/602960/view/4191239030281207530

The way the book works now is that it gives an amount of skill proportional to the number of kills the "writer" of the book got during the round. It seems though that often the amount of skill you get is less than 1 (meaning it's just progress towards the next whole skill level), in which case there's no notification about the skill increase.

It also seems that the amount of kills you need to get any meaningful skill increase seems to be pretty high now. We'll look into improving this, sorry for the inconvenience!