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