Here is the full list of all 15 MouseBot: Escape from CatLab achievements worth 1,000 gamerscore.
Collect Max Cheese in every level.
Collect all Heart Chips.
Finish the final level. You beat the game!
Collect the Easter Egg in Chapter 10.
Collect the Easter Egg in Chapter 9.
Collect the Easter Egg in Chapter 8.
Collect the Easter Egg in Chapter 7.
Collect the Easter Egg in Chapter 6.
Collect the Easter Egg in Chapter 5.
Collect the Easter Egg in Chapter 4.
Collect the Easter Egg in Chapter 3.
Collect the Easter Egg in Chapter 2.
Collect the Easter Egg in Chapter 1.
Beat the goal time in every level.
Complete every level at least once without dying.