Complete tasks at the following locations to get the corresponding achievement.

Borag

Expert Marksman:
Kill a large percentage of ALL the enemies.

Can't Touch This:
Don't make contact with anything before fighting the Boss.

Pyew Pyew!:
Without secondary fire complete the level.


Cragmite Ruins

Gotta Catch Them All:
Using the Magnet Launcher hit ALL the Cragmite soldiers.


Voron Asteroid Belt

Minesweeper:
Clear out 10-15 mines.

Whats that, R2?:
Barrel roll 10 times.


Imperial Fight Festival

I Think I'm Going to be Sick:
Without taking damage ride the Ferris Wheel multiple times.

Fast and Fire-ious:
Without getting burned use the charge boots to cross the bridge to the arena.

One Heckuva Peep Hole:
Return when you have the Geo Laser and then complete the Geo Laser setup.


Kerchu

Dead Aim:
When you are on the pirate barge destroy several destructible towers.

Fire With Fire:
Using a red-hot weapon kill several Kerchu Pyrogaurds.


Iris

Lombaxes Don't Like Cold:
Break ALL the breakable icicles.

Mow Down Hoedown:
Destroy multiple dancing pirates using the turrets.

Saucy Wrench:
Using a specific weapon destroy ALL camp fire cauldrons.


Pirate Base

Taste O' Yer Own Medicine:
Using the Combuster destroy ALL the Corsairs.


Apogee Space Station

Alphabet City:
Teleport to each of the 6 asteroids in alphabetical order.

Dancin' with the Stars:
Make 5 enemies dance at once on an asteroid (upper part of Beta).

Knock You Down to Size:
Wrench slam 5 Cerullean Centipedes.


Preemptive Strike:
Destroy 5 Thwogs while they are still sleeping.

It's Mutanty Captain:
In one shot change 5 Pirates into Penguins.


Planet Cobalia

Smashing Good Time:
At the Port and Gel Factory destroy ALL crates and consumer robots.

I Should Have Gone Down in a Barrel:
In the Cobalia Gelatonium plant jump into each of the two Gelatonium waterfalls.

Giant Hunter:
In the Cobalia wilderness kill ALL the Basilisk Leviathans.


Planet Sargasso

It Sounded Like a Freight Train:
In one tornado get 11 Anthropods.

Extinction:
Kill ALL the Sargasso Grunthors (Leviathans).

Head Examiner:
Land on ALL of the Troglosaur heads.


Planet Ardolis

Preemptive Strike:
Kill 5 of the Thwogs while they are sleeping.


Planet Jasindu

Fire With Fire:
Using the Pyro BlasterKill 2 Kerchu Pyroguards.


Planet Mukow

One Heckuva Peephole:
Blast through the wall using the Geo-Laser and then follow the path you took to get to the arena the first time. Clank will then start to sense the laser area.


Rakar Star Cluster

You Sunk My Battleship!:
Shoot down a large percentage of the flying ships.

I've Got Places to Be:
In under 2:30 seconds destroy Iron Crotch Caruso.

Pretty Lights:
Don't destroy any Snatchers.


Return To Fastoon

Nowhere To Hide:
Destroy every piece of breakable cover.


Rykan V

Untouchable:
Don't take damage in the Gyro-Cycle.

The Consumer is Not (Always) Right:
Destroy 18 consumer robots.

Live Strong:
In under 1:45 seconds complete the Gyro-Cycle.


Wrench Ninja 3:
Using only the Omniwrench get through the level to the robo wings section.

Surface-to-Air Plasma Beasts:
Using a specific weapon take out several flying targets.

Been Around:
In Stratus City take off from every Robo-Wing Pad.


Ublik Passage

Six Gun Salute:
Wearing the Holo-Pirate disguise get 6 pirates in a row to salute Ratchet.


Meridian

Stay Still So I Can Shoot You!:
While fighting Cragmite soldiers use Strafe Flip multiple times.

Now Boarding...:
In under 0:55 seconds complete the Gyro Cycle .

Low Flying Owls:
In the robo wing segment fly underneath an electrified barrier.


Verdigris Black Hole

Can't Touch This:
Don't take damage before fighting Greasepalms McGee.


Zordoom

Seared Ahi:
After freeing them from their robotic suits use the Pyro Blaster on the 3 Drophyds.

Dancing on the Ceiling:
Use the Groovitron on a Gravity Ramp.


Stratus City

We Don't Need No Stinkin' Bridges!:
Using Gel Cube bounces and without activating the bridge cross the Tripad sequence (you do not need to use the Gel Cubes).

These extra features are unlocked when you have collected the indicated amount of Skill Points.

Unlock 2007 E3 Trailer:
Get 25 Skill Points.

Unlock Big Head Mode (Ratchet Only):
Get 50 Skill Points.

Unlock Character Concept Art:
Get 75 Skill Points.

Unlock Big Head Enemies:
Get 100 Skill Points.

Unlock 2006 GDC Trailer:
Get 150 Skill Points.

Unlock Enviornment Concept Art:
Get 250 Skill Points.

Unlock Wrench Replacement:
Get 300 Skill Points.

Unlock Ratchet Drawing Tutorial:
Get 350 Skill Points.

Unlock James the Galactic Defender:
Get 400 SP (replaces Mr. Zurkon with James).

Unlock Weapon Concept Art:
Get 450 Skill Points.

Unlock Levels are Mirrored:
Get 500 Skill Points.

Unlock Script to Screen:
Get 600 Skill Points.

When you have completed the following tasks you'll receive the indicated amount of Skill Points.

Promoted To Inspector:
Collect ALL the gadgets.

Golden Children:
Collect ALL the Gold Bolts.

Cheapskate:
Buy a single Combuster shot.

For The Hoard!:
Collect ALL the combat devices.

Global Thermonuclear War:
Collect ALL the weapons.

Its Even Better The Second Time:
Complete Challenge mode.

Happy Feat:
Get 9 penguins dancing on screen.

Chorus Line:
Make 11 enemies dance together.

No, Up Your Arsenal:
Upgrade every weapon to the maximum.

Bolts in the Bank:
Sell 20 Leviathan Souls to the Smuggler.

Everybody Dance Now:
Make ALL types of enemies except bosses dance.

Disco Inferno:
Use the Groovitron followed by the Pyro Blaster.

It's Like The South Pole Here:
Turn more than 15 enemies or citizens into penguins at one time.

Roflcopter:
Turn enemies into penguins then use the Visicopter to destroy the penguins.

Say Hello To My Little Friend:
With one RYNO shot kill a group of enemies.

The Hardest Core:
Collect ALL the skill points and everything else in the game.

The RYNO (which stands for 'Rip Ya a New One') and if you have this weapon the game becomes incredibly easy. If you have ALL the Raritanium mods at v5 the Omega can be bought for 50,000,000. At level 10 the RYNO IV has 900 rounds with 5141 damage each.

Unlock RYNO IV
This weapon is unlocked by collecting each of the holo-plans.

Unlock RYNO 4Ever:
Play in challenge mode and fully upgrade the RYNO IV. Then purchase RNYO 4Ever from any weapons merchant for 50,000,000 bolts.

This mode is unlocked when you have beaten the game. In Challenge mode you play through the game against harder enemies but retain ALL your weapons, experience points and bolts from the previous journey.