Here is the full list of all 17 Plenty: Skyhearth achievements.
Score 125 points in one round.
Beat the internal Tiny Lions high score.
Score 100 or more points in one round.
Score 75 points in one round.
Score 75 points in one round during the Skyhearth Wingshooter Classic.
Score 50 points in one round.
Score 50 points in one round during the Skyhearth Wingshooter Classic.
Hit a falling bird before it hits the ground.
Score 25 points in one round.
Where do you come from?
Score 10 points in one round.
Kill your first bird.
Complete the tutorial.
Accumulate 1000 harvested birds.
Accumulate 2000 harvested birds.
Welcome to the beginning.