Here is the full list of all 21 Darkness Rollercoaster - there are Ultimate Shooter Edition achievements.
Complete the tutorial.
Complete Adventure stage by killing at least 40% of the enemies.
Complete Fantasy stage by killing at least 40% of the enemies.
Complete Space stage by killing at least 40% of the enemies.
Complete Future stage by killing at least 40% of the enemies.
Complete every stage by killing at least 40% of the enemies.
Complete Adventure stage by killing at least 60% of the enemies.
Complete Fantasy stage by killing at least 60% of the enemies.
Complete Space stage by killing at least 60% of the enemies.
Complete Future stage by killing at least 60% of the enemies.
Complete every stage by killing at least 60% of the enemies.
Complete Adventure stage by killing at least 80% of the enemies.
Complete Fantasy stage by killing at least 80% of the enemies.
Complete Space stage by killing at least 80% of the enemies.
Complete Future stage by killing at least 80% of the enemies.
Complete every stage by killing at least 80% of the enemies.
Complete every Exploration.
Unlock all levels.
Unlock all weapons.
Reach the end of all 5 checkpoints.
Unlock all achievements for Darkness Rollercoaster - Ultimate Shooter Edition