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