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