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