Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Annihilator	You destroyed more than 8 enemies almost at the same time.
ARCHE Change	You found a blueprint data which changes the design of a weapon.
Bloodsteel General	Defeated Astra Vinata in Samsara, Bloodsteel Arsenal.
Clean sweep	You cut down terrain with the Debris Blade, and destroyed 5 enemies with it almost at the same time.
Debris Blade	You have upgraded your ARCHE ability and can use the Debris Blade.
Debris Drill	You have upgraded your ARCHE ability and can use the Debris Drill.
Debris Javelin	You have upgraded your ARCHE ability and can use the Debris Javelin.
Debris Lock	You have upgraded your ARCHE ability and can use the Debris Lock.
Dragon of the Diamond Cave	Defeated Astra Rahu and Ketu in Patala, Diamond Gate of Dragons.
Empress of Nymphs	Defeated Mahastra Tara in Vimukti, Fortress of the Flying Nymphs.
Fiend of Decadence	Defeated Astra Sarama in Sattva, City of Decadence.
Heavy weight	You destroyed 50 enemies by crushing them with terrain.
I'm the master key	You collected all gate keys and opened all Area Gates.
Killer Technician	You destroyed 50 enemies using stage gimmicks.
Master of ARCHE	You found all blueprint data and collected all weapons.
Master of Blade	You destroyed 20 enemies using the Debris Blade.
Master of Drill	You destroyed 20 enemies using the Debris Drill.
Master of Javelin	You destroyed 10 enemies using the Debris Javelin.
Master of Lock	You destroyed 10 enemies using the Debris Lock.
Master of skills	You unlocked all skills and became a perfect cyborg.
Mighty Warrior	You completed the Astra Rush.
Open Sesame	You collected gate keys and opened an Area Gate.
Reckless Charge	You digged through terrain more than 30 meters with a single Debris Drill.
Seeking Sorceress	Defeated Astra Kadru in Darshana, Temple of Seekers.
Sharpshooter	You destroyed an enemy with a Debris Javelin shot from more than 20 meters away from it.
Skills improvement	You unlocked a skill.
Urge to destroy	You destroyed a lot of terrain.
Watch your head	You destroyed an enemy with a Debris Lock dropped from more than 10 meters above it.