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