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