Full list of all 14 Dimension Tripper Neptune: TOP NEP achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Achieve 100,000 points.
Achieve 150,000 points.
Clear all the stages.
Gather all your allies.
Clear stage 4.
Clear stage 3.
Fight with two partners.
Clear stage 2.
Clear stage 1.
Achieve 200,000 points.
Clear all the stages without taking damage.
Obtain 500 coins.
Defeat 1000 enemies.
Obtain all achievements.