Saints Row 2 Unlockables

To unlock the following abilities, fulfill the corresponding requirement listed.
UnlockableHow to unlock
Brotherhood MeleeBrotherhood, Mission 6
Health Regeneration (x2)Snatch, Mission 3 (Chinatown)
Health Regeneration (x3)Snatch, Mission 6 (Chinatown)
Improved Weapon AccuracySeptic Avenger, Mission 3 (Suburbs)
Improved Weapon Accuracy IISeptic Avenger, Mission 6 (Suburbs)
Pumped UpFight Club, Mission 3 (Arena)
Pumped Up IIFight Club, Mission 6 (Arena)
Reduced Bullet DamageHeli Assault, Mission 3 (Bario)
Ronin MeleeRonin, Mission 6
Ronin Notoriety ReducedDrug Trafficking, Mission 3 (Hotel and Marina)
Ronin Notoriety Reduced IIDrug Trafficking, Mission 6 (Hotel and Marina)
Sons of Samedi Notoriety ReducedSnatch, Mission 3 (University)
Sons of Samedi Notoriety Reduced IISnatch, Mission 6 (University)
Sprint IncreasedInsurance Fraud, Mission 3 (Factories)
Sprint Increased II (Infinite)Insurance Fraud, Mission 6 (Factories)
Reduced Vehicle DamageInsurance Fraud, Level 3 (Museum)
Reduced Vehicle Damage IIInsurance Fraud, Level 6 (Museum)