Here is the full list of all 28 Cloudlands : VR Minigolf achievements.
Get an eagle
Get a birdie
Get a hole in 1
Get a Hole in One on Hole 6
Complete a full 18 game
Complete a random 9 game
Get #1 Highscore
Beat full 18 with score under 100
Get exactly par in full 18 mode
Do full 18 without using a mulligan
Select a new ball color
Get a Hole in One on Hole 1
Get a Hole in One on Hole 2
Get a Hole in One on Hole 3
Get a Hole in One on Hole 4
Get a Hole in One on Hole 9
Finish Hole 10 in 3 strokes or less
Get a Hole in One on Hole 12
Get a Hole in One on Hole 17
Finish Hole 18 in 25 strokes or less
Finish Hole 5 in 3 strokes or less
Finish Hole 7 in 3 strokes or less
Finish Hole 8 in 2 strokes or less
Finish Hole 11 in 3 strokes or less
Finish Hole 13 in 2 strokes or less
Finish Hole 14 in 3 strokes or less
Finish Hole 15 in 10 strokes or less
Finish Hole 16 in 4 strokes or less