Here is the full list of all 45 WALL•E achievements worth 1,000 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox 360.
You've beat the Life on Axiom level without being scrapped!
You've beat the Good Intentions level without being scrapped!
You've beat the Time Together level without being scrapped!
You've beat the Sandstorm level without being scrapped!
You've successfully completed the Scan Racer activity in the Directive level!
You've beat the Welcome to Earth level without being scrapped!
You have found all 20 Sketchbooks in the game!
You have found all 6 WALL•E Radios in the game!
You've crushed 500 Cubes!
You've crushed 100 Heavy Cubes!
You've crushed 100 Basic Cubes!
You've seen everyone involved in the making of this game!
You've scanned all five WALL•E parts in less than 2 minutes in the EVE Loves WALL•E level!
You've beaten the game. Good job!
You found the Special Object in the EVE Loves WALL•E level!
You have found all 3 EVE Radios in the game!
You've beat the Captain's Orders level without being scrapped!
You didn't take any damage from any human!
You have collected all WALL•E Costume tokens in the game!
You have collected all EVE Costume tokens in the game!
You found the Special Object in the 100% Unsanitary level!
You've beat the 100% Unsanitary level without being scrapped!
You've completed all of the tunnels with time to spare in the Time Together level!
You've successfully completed the Taking out the Trash activity in the Time Together level!
You've successfully completed the Ring Race activity in the Time Together level!
You've successfully completed the WALL•E Away activity in the Time Together level!
You found the Special Object in the Good Intentions level!
You've destroyed more than 100 Stewards in the Good Intentions level!
You've freed all the Reject Bots in the Good Intentions level!
You sucessfully distracted M-O by dropping a cube in the Life on Axiom level!
You found the Special Object in the Life on the Axiom level!
You've crushed 100 Charge Cubes!
You've knocked over 25 humans in this level!
You've completed the Sandstorm level using less than 30 Stork Jumps!
You found the Special Object in the Sandstorm level!
You've completed all of the tunnels with time to spare in the Directive level!
You've beat the Directive level without being scrapped!
You've successfully completed the Booster activity in the Directive level!
You've successfully completed the Junk Buster activity in the Directive level!
You found the Special Object in the Directive level!
You found the Special Object in the Welcome to Earth level!
You've turned on the remaining four Power Pylons in the Welcome to Earth Level!
You've found the cockroach!