Here is the full list of all 33 RUINER achievements.
Acquire all outfits
Die 666 times
Use dash 9001 times
Unlock all iChing fortunes
Beat the game on Hard Difficulty
Finish NewGame+
Hack 50 enemies
Kill 3 enemies with a one explosion
Kill all Angels
Destroy all dead Hosts' piles
Acquire all basic abilities
Do 1003 pushups
Complete CATS quest
Hit 50 mines with your melee weapon
Beat the game without dying
Finish Speedrun
Burn 420 enemies with flamethrower
Finish Arena:Colosseum
Score more than 50000 points in Arena:Colosseum
Finish Epilogue
Beat the game on Easy Difficulty
Beat the game on Normal Difficulty
Defeat Sisters
Kill 75 enemies with a shield ram
Collect all bounties
Achieve 15 kills combo
Defeat TrafficKing
Destroy Angel core in the air
Reflect 100 bullets with your shield
Destroy 3 Angel cores in one go
Perform 50 Ruiner kills
Defeat Nerve
Finish Prologue