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