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