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