Here is the full list of all 20 The Initial achievements.
Kill enemy 1500
Learn all the skill
Play the game in any mode
Unlock very hard difficult
Watch the complete list
Beat Ruri at any difficulty.
Kill enemy 500
Beat Kyuya at any difficulty.
Kill enemy 200
Beat Ironclad at any difficulty.
Buy a new skill
Beat Ryuzaki at any difficulty.
Eliminate V-E robot
Destroy the enemy with the interference of the trap
To restore the energy device of a college district
Thank you for your purchase
very hard accomplished
Reaching the S rating is not easy
Execute enemies 200
Get coins 50000