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