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