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