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