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
Fully upgrade one character skill branch
Complete 'Intestinal Inspector'
Complete 'Midnight Snack'
Complete 'The Fast and the Furry'
Obtain all Gore Tool types
Obtain "Double Trouble" Gore Tool from Gassy Obariyon.
Complete 'Wayfarer's Forest'
Perform Finisher 100 times
Complete 'Doomsday Device'
Put 50 enemies on spikes
Kill 100 enemies with Gore weapons
Electrocute 50 enemies without Motoko's help
Obtain "Hungry, Hungry Heart" Gore Tool from Chef Oboru Guruma.
Freeze 75 enemies
Set 25 enemies on fire
Kill 150 enemies with environmental hazards
Complete 'Egg Express'
Explode 50 explodables
Complete 'Walking on Eggshells'
Fully upgrade a ranged weapon
Fully upgrade the katana
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.
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'
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.