Thnx for playing! Yep, the game balance was hard to gauge but I had a clear idea you needed to keep constantly mooving and had to make the best of the time on a safe spot using free-aim mode. Both power-ups are quite a boost… large caliber increases the hit area and damage of bullets, rapid firing increases fire cadence and bullet speed. And the best thing is both can be stacked! I hope the duration of the power-ups feels good, I was worried it felt too short or (worse…) too long.