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