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