v2.4.1 Updates

[Optimization & Adjustment] *Adjusted Galewing's soulboons Caelum Mundus: Riven & Avernus *Battle Room Less enemies, more rooms & items *Adjusted 37 items including Plasma Reactor, Beginner's Drum Set. Continuous adjustments in the future update. *Enhanced Poison and Frostbite effects *Weakened some enemies in Stronghold Center [Bug fixes] Berserk's incorrect damage bonus. No visual effect for Katherine's thunder-based normal hit. Glitch of buying/picking up Richman's Flask in Item Shop. Others.