Parry Impact
Parry Impact increases the effect of your parries on an opponent's structure. IGN says it requires a score of 5,000 and describes the upgrade as potentially important in boss fights. Its documented benefit is specifically tied to parrying, rather than general damage.
How it works
It is a score-gated Dragon Shrine upgrade. Maintaining your combo level builds score, while taking damage resets that combo. The evidence does not specify the size of the structure impact increase.
When it helps
Consider it if you can meet the score requirement and rely on parries, including in boss encounters.
Read the supporting references
Skills and Dragon Shrine upgrades in Sifu. Covers named moves, passive upgrades, their documented effects, and supported requirements. Does not compare editions or claim current rankings. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.