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.
Put 50 enemies on spikes
Obtain all upgrades
Complete 'Intestinal Inspector'
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.
Perform Finisher 100 times
Complete 'Wayfarer's Forest'
Fully upgrade one character skill branch
Electrocute 50 enemies without Motoko's help
Complete 'Doomsday Device'
Set 25 enemies on fire
Obtain "Hungry, Hungry Heart" Gore Tool from Chef Oboru Guruma.
Kill 150 enemies with environmental hazards
Complete 'Egg Express'
Fully upgrade a ranged weapon
Freeze 75 enemies
Complete 'Walking on Eggshells'
Fully upgrade the katana
Obtain "Blade of Hattori" Gore Tool from Hattori.
Kill 100 enemies with the katana
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'
Obtain "Penetrator" Gore Tool from Mogura.
Obtain "Disco Grenade" Gore Tool from Laser Shogun.
Complete 'Way to Motoko'
Perform Finisher 15 times
Obtain your first upgrade
Kill 200 enemies
Obtain "Equalizer" Gore Tool from Oni Hanma.
Complete 'The Dragon's Back'
Obtain "Brain Tonic" Gore Tool from Shogai.
Obtain "Brain Freeze" Gore Tool from Kugutsu.