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