Here is the full list of all 76 Serious Sam Fusion 2017 (beta) achievements.
Kill an enemy using the Mutilator.
Kill at least 3 enemies in one spinning Sledgehammer attack.
Kill the kicked enemy while it is still in the air.
Solve the riddle of the Sphynx.
Tear off 10 Kleer heads.
Smash 20 Kleers with the Sledgehammer.
Defeat the spaceship.
Rip out 10 Rocketeer hearts.
Blow a Major Biomechanoid into pieces.
Break 5 Arachnoid necks.
Rip 10 Juvenile spiders apart.
Secure the bird.
Kill an enemy with a gib torn from another enemy.
Remove 10 Gnaar eyes.
Squash 10 Hatchling spiders.
Gib 20 enemies from close range with a shotgun.
Rescue professor Stein. So to say.
Decipher an Egyptian text.
Find at least 30 secrets in single player.
Complete the Metropolis level in single player on unmodified serious difficulty.
Kill 100 enemies with Serious Damage active.
Destroy an enemy cannon with your own cannon.
Kill at least 30 enemies with a single Serious Bomb.
Kill 20 Harpies with the Sniper rifle.
Pull out a single Colt and immediately deliver a killing shot.
Find a secret under water.
Trigger Ugh-Zan's regeneration on The Great Pyramid.
Leap into the unknown on Luxor.
Pierce at least 10 enemies with a single cannonball.
Defeat the Lava Golem boss on Alley of the Sphinxes.
Obtain the Water Element.
Obtain the Fire Element.
Complete any level in single player.
Earn a gold medal on any level in single player Survival.
Obtain the Earth Element.
Obtain the Air Element.
Complete the Medieval episode in single player or cooperative.
Kill 100 Kleers with the Cannon.
Kill 200 enemies with the Laser gun.
Kill 300 Enemies with the Minigun.
Burn 100 enemies to death.
Complete the Persia episode in single player or cooperative.
Kill 50 Cucurbitos.
Kill 100 Enemies with the Cannon.
Kill 150 Enemies with the Rocket Launcher.
Kill 250 Enemies with a shotgun.
Complete the South America episode in single player or cooperative.
Kill 20 enemies with the Minigun without releasing the trigger.
Complete any level in co-op.
Complete a level in co-op with blood option set to hippy.
Finish the Legend of the Beast campaign in single player or cooperative.
Kill 200 Enemies with the Thompson Submachine gun.
Kill 10 enemies with the Chainsaw without releasing the trigger.
Frag a total of 100 players.
Win a versus match.
Earn a gold medal on any level in cooperative Survival.
Kill at least 5 headless kamikazes in one explosion.
Kill a Witch-Bride of Achriman.
Power up the Timelock.
Start the car.
Find Sam's classic outfit.
Awake the Guardian of Time.
Break 10 Soldier necks.
Kill 5 Cave Demons while they're in air.
Rip Scrapjack's head off.
Use the Mutilator to surf after a Werebull.
Perform all possible finishing moves in the game.
Kill 3 enemies in one sprint with the Sledgehammer.
Complete the Jewel of The Nile single player campaign.
Complete TFE, TSE and BFE single player campaigns.
Complete TFE, TSE and BFE single player campaigns on unmodified serious difficulty.
Complete TFE, TSE and BFE single player campaigns in the estimated time on each level.
Complete TFE, TSE and BFE campaigns in co-op on unmodified serious difficulty.