Full list of all 62 Serious Sam 3: BFE achievements. It takes around 60-80 hours to unlock all of the achievements in the base game on Windows.
The base game contains 61 achievements, and there is 1 DLC pack containing 1 achievements.
Decorate the Christmas tree on each level to unlock Rodolfo player model.
Find all secrets in single player.
Decipher all Egyptian texts.
Find at least 50 secrets in single player.
Earn a gold medal in Survival.
Complete The Guardian of Time in single player on serious difficulty without dying or loading.
Complete a Coin-op cooperative game on normal or higher difficulty.
Pick up at least 10 extra life items.
Pick up 100 gold coins.
Win one My Burden match with at least 3 players.
Win 10 deathmatch games.
Complete the campaign in cooperative with at least 2 players.
Frag 20 players with the Sledgehammer.
Score a total of 10 points in CTF matches.
Decapitate a Khnum.
Complete a Beast Hunt match
Complete the game in single player in half the estimated time on each level.
Complete the game in single player without manually reloading, aiming or sprinting.
Complete any level in cooperative with at least 2 players.
Win a versus match.
Make at least 3 kills in one Instant Kill match.
Earn a medal in Survival.
Decorate the Christmas tree.
Find Sam's classic outfit
Find the Vista secret.
Win one round in Last Man Standing game with at least 4 players.
Complete the single player campaign.
Complete the game in single player on unmodified serious difficulty.
Awake the Guardian of Time.
Power up the Timelock.
Use the Mutilator to surf after a Werebull.
Complete a deathmatch game with at least 1 frag.
Kill 20 enemies with the Minigun without releasing the trigger.
Gib 20 enemies from close range with a shotgun.
Kill at least 3 enemies in one spinning Sledgehammer attack.
Kill a Witch-Bride of Achriman.
Break 10 Soldier necks.
Pierce 5 enemies with one Devastator round.
Kill 3 enemies in one sprint with the Sledgehammer.
Kill 5 Cave Demons while they're in air.
Rip Scrapjack's head off.
Perform all possible finishing moves in the game.
Blow a Major Biomechanoid into pieces.
Kill an enemy using the Mutilator.
Solve the riddle of the Sphynx.
Break 5 Arachnoid necks.
Secure the bird.
Kill the kicked enemy while it is still in the air.
Squash 10 Hatchling spiders.
Tear off 10 Kleer heads.
Kill at least 5 headless kamikazes in one explosion.
Smash 20 Kleers with the Sledgehammer.
Rip 10 Juvenile spiders apart.
Remove 10 Gnaar eyes.
Rescue professor Stein. So to say.
Complete any level in single player.
Decipher an Egyptian text.
Kill an enemy with a gib torn from another enemy.
Rip out 10 Rocketeer hearts.
Complete the Jewel of The Nile single player campaign.