Full list of all 54 Serious Sam 4 achievements worth 1,000 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox Series X|S.
Unlock 10 S.A.M.s in a single playthrough.
Send Mental a message he won't forget.
Beat the game on any difficulty.
Kill 5 enemies in a row while your health is below 10 HP.
Kill 100 enemies with a headshot.
Escape the Oil Rig.
Kill 20 enemies while dual wielding double shotguns.
Finish a text adventure. On an oil rig. During an alien invasion.
Get justice. Get the Holy Grail. Get screwed over.
Go on a date with Hellfire.
Dismember 50 enemies with cannonballs.
Navigate the citadel of Carcassonne. Start reassembling your team.
Save a princess. Doesn't get more classic than that.
What if you could talk to the monsters?
Achievement is your middle name.
Protect humanity's treasures from invaders with no taste.
Cross the French countryside and get very cross.
Discover Fulbert's great invention.
Kill 50 healthy Kleers with a direct double shotgun hit.
Make 20 enemies kill each other using Psychotropic Grenades.
Use the mininuke to eliminate 100 enemies at once.
Find out what happened to the English airman.
Don't fear the reaper. Be the reaper.
Destroy 10 propaganda drones.
Harvest 100 enemies with a combine harvester.
Assist a couple of young ladies out hunting.
Ride the Popemobile to victory.
Meet a powerful granny.
Assist Dr. Vermetti in his war on worms.
Make sure Gabriella is OK.
Party like it's 199.
Kill 11 different enemies using melee attacks.
Sign Secchi's rifle.
Melee a big enemy.
Head into Rome. Ditch Rodriguez.
Get a weaponized black hole, using science.
Run away from an angry volcano you foolishly antagonized.
Kill a Witchbride using C4.
Collect scorched aliens for Professor Kiesel.
Die HAARP With A Vengeance.
Kill 5 enemies during a single Time Warp slowdown.
Recover the alien artifact located by Dr. Stein.
Kill an Aludran Reptiloid using nothing but a pistol.
Find out what happened to Alessandro.
One-shot kill 3 Werebulls with a shotgun.
Recover a key stolen by a cultist.
Get together with your friends and kill something big.
Spend 1000 minigun rounds while firing continuously.
Fight alongside Massimo Murena.
Kill 3 enemies with a double shotgun blast.
Unlock a S.A.M.
Save the rookie. Find Father Mikhail. See the sights.
Kill a Belcher using Belcher collateral barf damage.
Get knocked on the head and remember how you got here.