#Gain Multipliers

Everything that multiplies how much Speed a key press grants — none of these touch WalkSpeed directly, only how fast a player fills level progress (see Speed & WalkSpeed). They all stack together:

• Rebirth: 1 + 0.5 * Rebirths — permanent, survives everything (see Rebirth)
• Cosmetics: equipped Trail multiplier + equipped Aura multiplier, floored at x1 if neither is equipped — they add together, they don't multiply each other (see Trails & Auras)
• Items: every equipped item's +Percent adds up, applied as (1 + ItemsPercent / 100) (see Items)
• 2x Speed gamepass: flat x2 if owned

Example: a player with 2 Rebirths (x2), a x1.5 Trail and a x2 Aura equipped (x3.5 combined), two items worth +5% and +10% (x1.15), and the 2x Speed gamepass ends up gaining 2 * 3.5 * 1.15 * 2 = 16.1x the base Speed per key press. Every factor is independent — you can retune any one of them in Config without touching how the others are computed.