Here are ALL 37 of the achievements and secret achievements and what needs to be done to get them. They are worth a total of 1,000 points.
Give Em The Ol' One-Two, Or Six (5)
Attain a 6 hit combo.
Power Overwhelming (5)
Bolt successfully defeated 3 different enemies with Super Sonic Bark, Laser Eyes and Ground Pound.
Walking Is Boring (5)
Penny successfully performed a wheel bar up, sidle and cable.
Party Crasher (10)
Completed the final level of Act 1 (Italy).
Mad Combo Skills (15)
Attain a 15 hit combo.
So You Think You Can Hack (15)
Completed 5 Bonus Hack Levels.
Welcome To The Jungle (20)
Completed the final level of Act 2 (Belize).
Tame The Mainframe (25)
Completed 10 Bonus Hack Levels.
Atomic Core Critical (30)
Bolt's power bar maxed out.
Battery Upgrade Complete (30)
Penny's gadget bar maxed out.
Biological Enhancement Complete (30)
Bolt's health bar maxed out.
Good Comrade (30)
Completed the final level of Act 3 (Russia).
No Hack Too Hidden (35)
ALL bonus hack levels have been found.
Well 'Trained' (40)
Completed the final level of Act 4 (China).
Combo Master (50)
Attain a 30 hit combo.
Security? What Security? (50)
Completed 15 Bonus Hack Levels.
Sneaky Sneaky (50)
Penny completed 'Raisin' A Ruckus' or Hide And Sneak' without alerting any enemies and without using cheats.
Time To Increase Recruiting (50)
250 of Calico's henchmen have been defeated.
Beat a mini-game level without taking damage.
Beyond Awesome, It's Be-Awesome (100)
Completed the final level of Act 5 and the Game (Oceania).
Bull Whipped! (5)
Bolt defeated Bully with a finishing move.
Give Him The Boot (5)
Bolt defeated Stompy with a finishing move.
Indiscriminate Justice (5)
Bolt defeated Proddy with a finishing move.
Got hit by an SUV!
Ruffed Up (5)
Bolt defeated Glovey with a finishing move.
Starry Eyed (5)
Bolt defeated Starry with a finishing move.
This Dog Doesn't Play Frisbee (5)
Bolt defeated Disky with a finishing move.
Which Button Is Block? (5)
Got whipped by a Glovey.
Security Override (15)
Penny successfully hacks the system
Lights Out! (25)
Destroyed Calico's generators.
Scrap Metal (30)
Destroy 7 of Calico's SUVs.
Belly Up (35)
Sunk Calico's Warheads.
Bolt, Speak! (35)
100 of Calico's henchmen have been defeated by Bolt's Sonic Super Bark.
Bolt, Stare! (35)
100 of Calico's henchmen have been defeated by Bolt's Laser Eyes.
The Dog Pound (35)
100 of Calico's henchmen have been defeated by Bolt's Ground Pound.
Watch Your Step (35)
Send 25 Calico henchmen through windows or over cliffs.
The Cat Didn't Come Back (45)
Calico was utterly defeated.
Added by: Guest Dec 31st 1969, ID#