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