Bonuses against conditions
Some damage bonuses only count when the target is in a certain state: bleeding, burning, stunned, at full Health, or badly hurt. They join your other percent bonuses for that hit.
The rule
The game checks the target at the moment of the hit. Every bonus that applies is added to the same percent total as your damage type bonus, then the total multiplies your Power once.
A target "has" an effect when it carries at least one stack of it.
Example
Crimson Reaper gives +12% Damage vs. Bleeding. 
Rage-bound Fighter gives +12% Damage vs. Stunned. Against a target where both count, the hit gets +24%, not 25.44%, because percent bonuses add up before they multiply.
Damage bonuses
| Stat and when it counts | Where to get it |
|---|---|
| Damage vs. Bleeding The target has Bleeding |  Blood Borne,  Conditioned Exploitation and 3 more |
| Damage vs. Full Health The target is at full Health |  Damage vs. Full Health,  Earth Shattering Might and 1 more |
| Damage vs. Stunned The target is stunned |  Damage vs. Stunned, Earth Shattering Might and 4 more |
| Damage vs. <40% HP The target is below 40% Health |  Ambidextrous Precision,  Closing Window and 7 more |
| Damage vs. Poisoned The target has Poison | Conditioned Exploitation,  Damage vs. Poisoned and 3 more |
| Damage vs. Burning The target has Burning |  Increased Damage vs. Burning,  Lord of Cinders |
| Damage vs. Chilled The target has Chill |  Increased Damage vs. Chilled,  Master of Ice |
| Damage vs. Echoed The target has Temporal Echo |  Adept of Time,  Emberecho and 3 more |
| Attack Damage Every hit |  Attack Damage Increase,  Cinder-Gored Strikes and 4 more; can roll on 24 rune sets |