Here is the full list of all 75 Wandersong achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Did 20 dashes
Did 10 dashes
Did 5 dashes
Did a dash
Killed Queen Order
Killed the Queen of Winds
Charged 50 bolts
10 with charged sword
Reflect an attack
25
Charged 40 bolts
Defeat 3 Spinnies
50
7
Charged 30 bolts
5
15
Launched by a lightbulb
40
Defeat an Owl
3
Defeat a Spinny
Charged 20 bolts
Charge a lightbulb
Defeat 15 bats
Hit 5 with a charged sword
3 Stompies
30
Charged 10 bolts
Defeat a stompy
20
Defeat 7 bats
Hit 3 things with lightning
10
Jump 5 times
Charged 5 bolts
Defeat 3 bats
Defeat a bat
Hit with a charged sword
Chain 2 things with 1 bolt
Charged 2 bolts
Killed Queen Chaos
Defeated the boss of the Ruins
Defeated the Troll
Killed the Sun's King
Killed the Moon's Queen
Killed two Overseers at once!
Killed the King of Hearts
Killed the Dream King
Killed the final boss
Charged 100 bolts
Did 30 dashes
100
Reflect 3 attacks
Reflect 10 attacks
Reflect 20 attacks
3 things with 1 bolt
4 things 1 bolt
7 Stompies
15 Stompies
Defeat 7 Spinnies
Defeat 3 Owls
Spin your sword for a while
Kicked a bard 3 times
Kicked a bard 10 times
Saved the city from a monster attack
Did a slow clap at an appropriate time
Helped victims of war find a safe place
Reflect 30 attacks!