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