Here is the full list of all 40 Serious Sam 3: BFE trophies - there are 26 bronze, 9 silver, 4 gold and 1 platinum.
Unlock all trophies.
Complete the game in single player in half the estimated time on each level
Complete the game in single player on unmodified serious difficulty.
Complete the single player campaign.
Find all secrets in single player.
Decipher all Egyptian texts.
Blow a Major Biomechanoid into pieces.
Kill 3 enemies in one sprint with the Sledgehammer.
Use the Mutilator to surf after a Werebull.
Smash 20 Kleers with the Sledgehammer.
Kill the kicked enemy while it is still in the air.
Break 5 Arachnoid necks.
Find at least 50 secrets in single player.
Gib 20 enemies from close range with a shotgun.
Break 10 Soldier necks.
Complete any level in single player.
Decipher an Egyptian text.
Remove 10 Gnaar eyes.
Rip out 10 Rocketeer hearts.
Find Sam's classic outfit
Awake the Guardian of Time.
Start the car.
Kill at least 5 headless kamikazes in one explosion.
Kill a Witch-Bride of Achriman.
Tear off 10 Kleer heads.
Power up the Timelock.
Kill 20 enemies with the Minigun without releasing the trigger.
Decapitate a Khnum.
Kill an enemy using the Mutilator.
Pierce 5 enemies with one Devastator round.
Perform all possible finishing moves in the game.
Rip Scrapjack's head off.
Solve the riddle of the Sphynx.
Defeat the spaceship.
Rip 10 Juvenile spiders apart.
Secure the bird.
Kill an enemy with a gib torn from another enemy.
Squash 10 Hatchling spiders.
Rescue professor Stein. So to say.
Complete any level in cooperative with at least 2 players.