Here is the full list of all 38 Shadow Warrior 3 achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Kill 100 enemies with the katana
Obtain "Equalizer" Gore Tool from Oni Hanma.
Obtain your first upgrade
Complete 'The Dragon's Back'
Obtain "Brain Tonic" Gore Tool from Shogai.
Obtain "Brain Freeze" Gore Tool from Kugutsu.
Complete 'Way to Motoko'
Complete 'Motoko's Thunderdome'
Complete 'That Damn Dam'
Complete 'Walking on Eggshells'
Complete 'Egg Express'
Complete 'Doomsday Device'
Complete 'Wayfarer's Forest'
Complete 'The Fast and the Furry'
Complete 'Midnight Snack'
Complete 'Intestinal Inspector'
Obtain all upgrades
Fully upgrade a ranged weapon
Fully upgrade the katana
Fully upgrade one character skill branch
Perform Finisher 15 times
Perform Finisher 100 times
Obtain all Gore Tool types
Put 50 enemies on spikes
Explode 50 explodables
Kill 100 enemies with Gore weapons
Kill 200 enemies
Set 25 enemies on fire
Electrocute 50 enemies without Motoko's help
Freeze 75 enemies
Kill 150 enemies with environmental hazards
Obtain "Disco Grenade" Gore Tool from Laser Shogun.
Obtain "Penetrator" Gore Tool from Mogura.
Obtain "Seeking Eye" from Seeking Shokera.
Obtain "Swarm Launcher" Gore Tool from Slinky Jakku.
Obtain "Blade of Hattori" Gore Tool from Hattori.
Obtain "Hungry, Hungry Heart" Gore Tool from Chef Oboru Guruma.
Obtain "Double Trouble" Gore Tool from Gassy Obariyon.