Here is the full list of all 35 Lode Runner Legacy achievements.
Submitted a self-created item for the first time.
Submitted a self-created character for the first time.
Submitted a self-created map for the first time.
Obtained 900 stars.
Clear 100 World levels.
Clear 50 World levels.
Clear 10 World levels.
Clear a World Level for the first time.
Obtained a total of 4,000,000 points.
Clear 50 Puzzle levels.
Obtained all 150 stars in Puzzle Mode.
Clear 150 Classic levels.
Obtained all 300 stars in Classic Mode.
Buried enemies and retrieved 3 gold in a row.
Clear 100 Classic levels.
Clear 50 Classic levels.
Rode 30 times on the heads of active enemies.
Clear 30 Puzzle levels.
Seized 50 gold by burying enemies.
Buried 100 enemies.
Clear Classic Mode level for the first time.
Clear 10 Puzzle levels.
Clear Puzzle Mode level for the first time.
Trapped 30 enemies in places where they cannot move.
Obtained all 150 stars in Adventure Mode.
Clear 50 Adventure levels.
Crossed over the heads of 3 or more active enemies.
Clear 30 Adventure levels.
Obtained a total of 1,500,000 points.
Cleared without dropping a single enemy into a hole.
Clear 10 Adventure levels.
Obtained a total of 500,000 points.
Clear Level 01 of Adventure Mode.
Cleared while still in TimeBonus x3 condition.
Cleared without killing a single enemy.