Here is the full list of all 30 Putty Squad achievements worth 400 gamerscore.
You completed Level 4.4 : Dr Sushi's Dinner Of Fear in a time of 1:52 or less.
You completed Level 6.1 : Gateway To The North in a time of 1:15 or less.
You collected all the stickers for the House of Happy Horrors Sticker Book page.
You collected all the stickers for the Foggy Fortresses of Fear Sticker Book page.
You completed Level 3.2 : Fortress Of Klud in a time of 1:30 or less.
You completed Level 5.2 : Fun Land in a time of 1:15 or less.
You collected all the stickers from the Septic Swamps of Sushi Sticker Book Page.
You obtained and used all of Putty's attack power-ups.
You collected all the stickers for the Secret Souks of Swat Sticker Book page.
You collected all the stickers for the Karmic Kingdoms of Klud Sticker Book page.
You completed Level 2.2 : The Wailing Tower in a time of 1:30 or less.
You completed Level 1.5 : Watchtower Of Squirt in a time of 1:45 or less.
You collected all the stickers for the Phantom Pharoahs of Phut Sticker Book page.
You collected enough stars to get the Star-Counter up to 200.
You completed Level 2.1 : Bizarre Bazaar in a time of 1:15 or less
You blew up a Toad enemy.
You absorbed a firework imp and used it to kill an enemy.
You collected enough stars to get the Star-Counter up to 50.
You picked up a 'P' item, then used the POD to collect a star.
You completed Level 1.1: Tomb Of King Phut in a time of 1:10 or less.
You used a GI Pup's helmet to take out at least three enemies in a row.
You used Dweezil's tummy to bounce to a higher area.
You killed all GI Pups within a level
Complete all Achievements and defeat Scatterflash to be crowned King Putty
Save all Red Putties and get to the exit of Level 7.9 : Major Smith's Escape Tunnel in 2:15 or less.
Collect all Stars and finish Level 9.3 : Night Flight in 0:40 or less.
Collect all the stickers from the Sticker Book page : Lost Lanes of London
Collect all the stickers from the Sticker Book page : Wicked Wizards Wastelands
Collect all the stickers from the Sticker Book page : Deadly Dimensions of Dread
Collect all the stickers from the Sticker Book page : Putty Planet Advisor