Here is the full list of all 13 3 out of 10: Season One achievements worth 1,000 gamerscore.
Complete Episode 1
Complete Episode 2
Complete Episode 3
Complete Episode 4
Complete Episode 5
Get the top spot in an episode leaderboard
Get all Stars in a single episode
Get all Stars in the season
Feed Sally five things while cooking
Get hit by a train
Equip a level 3 plant
Don't lose any chais
Clear the way to Canada of all Spider-Moose