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