Here is the full list of all 28 Flying Pengy achievements.
collect as much coloful balloons as possible
bring down a monster with a bomb explosion
hit monster with a cube
knock down a monster with a boomerang
bounce a ring off the parachute many times
shoot down all monsters in the level
finish game on all difficulty levels
hit two monsters with one cube
bring down two monsters with one fireball
bring down two monsters with one ball
finish level without being freezed or shocked
finish level without losing a ball
knock down two monsters with one boomerang
knock down a monster when still frozen
hit the ball while Pengy is still frozen
bring down a monster with a fireball
go through level while keeping one ring
level up pengy as much as possible
go through level while keeping two rings
shoot down a monster with a multiball
collect all the bonuses in the level
knock down a monster before its first attack
shoot down a monster with using an arrow
knock down a monster when still shocked
hit the ball while Pengy is still shocked
shoot down as much monsters as possible
release a monster and do not shoot it
release two monsters and do not shoot them