Enhancing Cosmic Destroyer to to level 60 unlocks the Book Collection achievement "I Don't Do Regrets", which rewards the player with an increase of 1.0% in Atk.
How to obtain[]
Pickup Equipment Summon
The weapon can be pulled in the Pickup Equipment Summon. Increased rates for weapon pickup were present in the following summons:
2021-02-23 after maintenance ~ 2021-03-09 12:59:59 (server time*)
2021-06-15 after maintenance ~ 2021-06-29 before maintenance (14 days)
2021-08-24 after maintenance ~ 2021-09-07 before maintenance (14 days)
Mileage
The weapon can be bought in the Mileage shop for 300. It can also be obtained by buying an Epic Exclusive Equipment box for 300 or 900.
On hit, Magiton energy explodes by 30% chance to inflict 50% of DPS and reduce the target's weapon skill regen speed by 30% for 2 second(s). 1 second(s) cooltime.
On hit, Magiton energy explodes by 30% chance to inflict 50% of DPS and reduce the target's weapon skill regen speed by 30% for 2 second(s). 1 second(s) cooltime.
On hit, Magiton energy explodes by 30% chance to inflict 50% of DPS and reduce the target's weapon skill regen speed by 30% for 2 second(s). 1 second(s) cooltime.
・Weapon Skill Lv +4
Trivia[]
The weapon is a reference to the Knight that uses a Gatling gun in Kama-ZONE, which is a notoriously strong enemy.
300. It can also be obtained by buying an Epic Exclusive Equipment box for 
300 or 
