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