Here is the full list of all 48 Tiltagon achievements.
Get 1 star on level 8
Get 2 stars on level 8
Play 1000 games
Get 3 stars on level 7
Get 1 star on level 7
Get 2 stars on level 7
Get 50 points in Hard+
Get 30 points in Hard+
Play 500 games
Get 50 points in Hard
Get 30 points in Hard
Get 2 stars on level 6
Get 3 stars on level 6
Get 1 star on level 6
Get 1 star on level 5
Get 2 stars on level 5
Get 3 stars on level 5
Get 1 star on level 4
Get 2 stars on level 4
Get 3 stars on level 4
Get 3 stars on level 3
Get 2 stars on level 3
Get 1 star on level 3
Get 3 stars on level 2
Get 2 stars on level 2
Get 1 star on level 2
Get 20 points in Hard+
Play 100 games
Get 10 points in Hard+
Get 20 points in Hard
Play 10 games
Get 10 points in Hard
Play first game
Get 1 star on level 1
Get 2 stars on level 1
Get 3 stars on level 1
Get 3 stars on level 8
Get 1 star on level 9
Get 2 stars on level 9
Get 3 stars on level 9
Get 1 star on level 10
Get 2 stars on level 10
Get 3 stars on level 10
Play 5000 games
Get 75 points in Hard
Get 100 points in Hard
Get 75 points in Hard+
Get 100 points in Hard+