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