Skill points are always the most fun part of this game and make it incredibly replayable. They are the super special things you can do in each area to gain world renown :)

Stay squeaky clean - Florana
Do the Path of Death without being hit at all

Strive for arcade perfection - Phoenix
Get health and bolts on all games

Beat Helga's best time - Phoenix
beat 50 seconds

Turn up the heat - Phoenix
Afford the Infernox armor

Monkeying Around - Phoenix
You have to hit Scrunch with the wrench - i.e. chase him around the bridge. Just stand on the top in aim mode and he'll run to you.

Reflect on how to score - Marcadia
Slay 25 enemies with the refractor

Bash the bug - Annihilaiton Nation

Be an eight time champ - Annihilation Nation
Just win the 8 base challenges

Flee Flawlessly - Annihilation Nation
Do the gauntlet without being hit

Lights, camera, action! - - Annihilation Nation
shoot 5 floating cameras out

Search for sunken treasure - Aquatos
blow up 40 underwater boxes

Hit the motherload - Aquatos
Get all 101 crystals - best done once you have the mapper

Be a sharpshooter - Tyhrranosis
Snipe 10 Tyhrranoids in the towers

Bugs to Birds - Daxx
Turn 15 of the red Florian Blood Flies into ducks

Get to the belt - Obani Gemini
Get onto the floating asteroid ring. From the last tower, jump up to the belt. One of the asteroids is whiteish in color - there are flat ones around that one, to leap onto. If you miss you can land back on that tower.

Bash the party - Blackwater City
Kill 20 enemies with your wrench

Feeling lucky - Holostar Sudios
Get a jackpot on one of the slot machines

2002 was a good year in the city - Metropolis
Shoot the blimp in metropolis

Suck it Up! - Crash Site
Kill 40 enemies with the suck cannon

Aim high - Crash Site
Kill 10 screeducks (i.e. the bird things)

Zap back at ya' - Aridia
Kill 10 enemies with the refractor

Go for hang game - Aridia
Do a jump that lasts more than 2 seconds - use the ramp jump and then don't land on the other side to get it.

Break the Dan - Qwark's hideout
Find the snowman and bash it
Take a zip line and go up a ladder. Then there's a two hypershot location. When you land, you're on a plateau. The snowman is up on top of a thing to your right. You can't see it - all you see is a space between two walls. You have to jump at the far wall without the helicopter, so you can wall jump up to the top.

You break it, you win it - Koros
Just break a ton of things in the city - "Smash up the robot base"

Spread your germs - Command Center
Infect 30 enemies

Set a new records for Quark - Pirate booty!
beat 2:40

Set a new records for Quark - Arriba ameobe
beat 2:10

Set a new records for Quark - Shadow of the robot
beat 1:50

Set a new records for Quark - Deja Q all over again
beat 4:45

Set a new records for Quark - The shaming of the Q
beat 2:00

Ratchet and Clank 3 - Up Your Arsenal Walkthrough