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