Reduced the brightness of the attack effects for Turrets A-1 and A-2.
Fixed the visual bug in damage statistics display.
Added a brightness adjustment option to the main interface settings.
Added additional prompt effects when the maximum health is reduced in the game.
Adjusted the maximum difficulty from 99 to 9 — now only 9 difficulty levels are selectable in Normal Mode. Meanwhile, the acquisition efficiency of Space Coins has been significantly improved.