One for the Road is the tenth main chapter of Serious Sam 4, set in the French countryside and the city of Carcassonne. Sam travels through an EDF military base, a quarry, and enemy-infested streets while trying to reach Kenny and the French Resistance.
Throughout the chapter, players can discover 13 hidden secrets and collect a S.A.M. egg for a skill point. Completing the optional Armed, Farmed, and Alarmed and La Route de l’Enfer side missions rewards the FRPCL and a H.E.A.R.T. gadget.
One for the Road is the tenth chapter of Serious Sam 4. After arriving in France, Sam continues toward Carcassonne to reunite with Kenny and the French Resistance.
This chapter is quite different from the earlier levels. It starts at an EDF military base, gives you control of a powerful mech, and later lets you drive an ATV through the French countryside.
There are 13 secrets, 2 side missions, 1 S.A.M. egg, 1 skill point, 3 notes, and 1 audio log to find in this chapter.
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Investigate the Military Base
At the beginning of the chapter, follow the path toward the military base.
You’ll soon run into several groups of Mental’s forces, including Octanian soldiers and Pyromaniacs. Clear the enemies around the entrance and continue deeper into the base.
There are plenty of supplies around, so don’t worry too much about using your ammunition.
Before leaving this first area, make sure you grab the first secret.
Secret #1 – Black Hole
At the beginning of the level, look for a group of concrete blocks near the buildings.
Jump onto the blocks, then onto the nearby container and from there onto the roof.
Walk across the roof and jump onto the blue container.
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The Black Hole gadget is sitting on the container.
Pick it up to complete Secret #1.
It’s worth grabbing this one before moving on because the route becomes much more open afterward.
Enter the Mech
Continue through the military base and eventually you’ll reach a large combat area.
Fight your way through the enemies until you reach the mech.
Once Sam climbs inside, the next part of the chapter becomes much easier.
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Use the mech’s weapons to clear the fields and destroy the enemies in your path.
You’ll encounter various biomechanical enemies and Werebulls along the way. The mech can take quite a bit of punishment, so don’t be afraid to push forward aggressively.
Eventually, the mech will run out of power.
Get out and continue on foot.
S.A.M. Skill Point
After leaving the mech, you’ll reach another small military outpost.
Look for the building containing a radio near the entrance.
Inside is a S.A.M. egg, which gives you 1 skill point.
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Make sure you pick it up before leaving the area.
This is the only S.A.M. egg in One for the Road.
“Armed, Farmed and Alarmed” Side Mission
After leaving the mech section, continue toward the small settlement.
When you reach the area with the four silos, don’t immediately follow the main objective.
Look to the right for a small white shack next to a dirt road.
Inside the shack you’ll find a note called “Letter to Edith.”
Reading it starts the optional side mission “Armed, Farmed and Alarmed.”
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The mission involves investigating a mysterious hermit who lives on a farm nearby.
Follow the dirt road and continue toward the farm.
Find the Hermit
As you approach the farm, you’ll eventually reach a barn.
A short cutscene plays when you arrive.
Afterward, you’ll receive the FRPCL, a strange weapon that fires circular blades.
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The FRPCL is a fun weapon to use against groups of enemies, so it’s definitely worth taking the detour to complete this side mission.
This completes Armed, Farmed and Alarmed and unlocks the “Fulbert le Fou” achievement/trophy.
Note – “To Whom It May Concern”
While following the route to the farm during Armed, Farmed and Alarmed, you’ll eventually reach a house occupied by an Octanian patrol.
Clear out the enemies and check behind the house.
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You’ll find “To Whom It May Concern” on a small round table next to some health and ammunition.
Pick it up before continuing.
Note – “The Fulbertian Revolution”
At the end of Armed, Farmed and Alarmed, look around the barn area.
Near the tractor is a closed-off well.
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The document “The Fulbertian Revolution” is sitting beside the well.
This is the third and final note in the chapter.
Head to the Quarry
Return to the main objective and continue toward the quarry.
You’ll eventually reach a large open quarry area.
Before going down, take some time to search the upper levels because several secrets are hidden around the quarry.
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Secret #2 – Time Warp
At the entrance to the quarry, look toward the right-hand cliff.
You’ll notice a wooden plank sticking out from the cliff with a purple item sitting on it.
Shoot the plank.
The item will fall down.
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Jump down and collect the Time Warp to complete Secret #2.
Secret #3 – Hacked Drone
From the previous secret, move down one level.
Look around the area near the excavator.
You’ll find a Hacked Drone nearby.
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Pick it up to trigger Secret #3.
Secret #4 – Companion Orb
Continue down another level of the quarry.
Look for a small hole in the ground.
Inside is a glowing orb.
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Shoot the Companion Orb to activate it and complete Secret #4.
The orb will then help you by attacking nearby enemies.
Secret #5 – Rage Serum
Continue along the quarry path.
About halfway down, look toward the left side of the main route.
You’ll see some rocks that can be climbed.
Follow the rocks around the side of the quarry and look behind the bushes.
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You’ll find a Rage Serum.
Pick it up to complete Secret #5.
Enter the Quarry
Continue down into the huge quarry.
At the bottom you’ll find the XPML21 Devastator, a powerful weapon capable of penetrating enemies and their shields.
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This weapon is especially useful against enemies carrying shields and some of the larger enemies you’ll encounter in the quarry.
Once you’ve picked it up, a large battle begins.
You’ll have to fight through several waves of enemies while making your way toward the exit.
Keep moving around the quarry instead of staying in one place, as enemies can surround you surprisingly quickly.
Secret #6 – Holodecoy
After completing the quarry battle, start heading toward the exit.
Before leaving, look to the left side of the exit.
Jump onto the fence and use it to get behind the nearby building.
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You’ll find a Holodecoy hidden behind the structure.
Collect it to complete Secret #6.
Continue to Carcassonne
Leave the quarry and continue toward the main objective.
You’ll soon find an ATV.
Get on it and follow the road toward Carcassonne.
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The ATV is particularly useful because it can climb hills and rough terrain much more easily than the earlier vehicles.
Enjoy the drive, but keep an eye out for the next optional mission.
“La Route de L’enfer” Side Mission
While driving toward Carcassonne, you’ll receive a distress call.
If you miss the radio message, look for the large column of smoke in the distance.
Drive toward it.
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You’ll eventually discover an EDF convoy that has been attacked by Octanian Raiders.
Get off the ATV and clear out the enemies around the convoy.
Once the area is safe, look next to one of the Humvees.
You’ll find a crate containing a H.E.A.R.T. gadget.
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Collecting the H.E.A.R.T. completes La Route de L’enfer.
This side mission is also tied to the “Carcassonne And Die” achievement/trophy for crossing the French countryside and reaching Carcassonne.
Meet Kenny
Continue toward Carcassonne.
Eventually, you’ll reach a bridge where Sam has to leave the ATV behind.
Cross the bridge on foot and you’ll finally meet Kenny again.
Unfortunately, the reunion doesn’t last long before the next battle begins.
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Follow Kenny through the town and prepare for several groups of enemies.
Secret #7 – Psychotropic Grenades
After meeting Kenny, enter the town.
Instead of immediately following the main road, head left behind the concrete barriers.
Continue along the street until you reach the stadium.
Go underneath the stands.
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You’ll find Psychotropic Grenades hidden underneath the stadium.
Pick them up to complete Secret #7.
Secret #8 – Football Glory
While you’re at the stadium, enter the area where the football match is taking place.
You’ll see two teams playing — one made up of Sam clones and the other of Mental Mates.
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This is the Football Glory secret.
Take a moment to watch the match before continuing.
The secret is a reference to Football Glory, an earlier game developed by Croteam.
Secret #9 – Health
Leave the stadium and return to the main street.
Continue toward the objective.
On the left side of the road, look behind the sandbags and large boxes.
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You’ll find a hidden health pickup.
Collect it to trigger Secret #9.
Secret #10 – C-4
Continue further down the same street.
On the left side, look for a low brick wall.
Go behind it.
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You’ll find several C-4 charges.
Pick them up to complete Secret #10.
Secret #11 – L.I.F.E. Gadget
Eventually, you’ll enter a city park.
Stay on the right side and look for a wrecked car.
Climb onto the car and use it to jump onto the roof of a nearby kiosk.
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A L.I.F.E. gadget is waiting on the roof.
Collect it to complete Secret #11.
Secret #12 – L.I.F.E. Gadget
From the kiosk, continue through the park toward the large vehicle.
Look for some sandbags along the right-hand wall.
Climb onto the sandbags and jump over the wall.
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You’ll find another L.I.F.E. gadget hidden on the other side.
That’s Secret #12.
Secret #13 – L.I.F.E. Gadget
The final secret is also inside the park.
From the previous secret, cross the park and look for a generator near the wall.
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Search behind the generator to find another L.I.F.E. gadget.
Collect it to complete Secret #13, the final secret in One for the Road.
The Battle in the Park
Once you’ve finished collecting the secrets, continue toward the main objective.
The park turns into a large battle arena.
You’ll have to fight waves of enemies, including Kamikazes, Werebulls and other larger creatures.
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Keep moving around the park and use the open space to your advantage.
Eventually, Achriman appears.
The situation quickly gets worse when Kenny is attacked.
Kenny’s Fate
Achriman manages to get the upper hand and Kenny is killed.
It’s one of the more important story moments in the game, as Sam loses one of the newest members of his team.
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After the encounter, Sam meets Said, a member of the French Resistance.
The two begin making their way toward the next stage of the mission.
This brings One for the Road to an end.
Audio Log – “An Unexpected Guest”
There is one audio log to collect in this chapter.
After meeting Kenny at the bridge, enter the town.
At the junction where the road branches to the right, look around the rubble in the middle of the street.
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The audio log “An Unexpected Guest” is hidden among the rubble.
Pick it up before continuing through the town.
Chapter 10 Checklist
- Side Missions: 2
- Armed, Farmed and Alarmed: FRPCL
- La Route de L’enfer: H.E.A.R.T. gadget
- Secrets: 13
- S.A.M. Eggs: 1
- Skill Points: 1
- Notes: 3
- Audio Logs: 1
- Main Objective: Reach Carcassonne and meet Kenny
- Location: Aude, Occitanie, France
Secrets at a Glance
- Black Hole – Military base
- Time Warp – Quarry cliff
- Hacked Drone – Quarry
- Companion Orb – Quarry
- Rage Serum – Quarry
- Holodecoy – Quarry exit
- Psychotropic Grenades – Under the stadium
- Football Glory – Stadium
- Health – Town street
- C-4 – Behind brick wall
- L.I.F.E. Gadget – Park kiosk
- L.I.F.E. Gadget – Behind park wall
- L.I.F.E. Gadget – Behind generator
With all 13 secrets, both side missions, the S.A.M. egg and the dossier collectibles collected, you’ve completed everything important in One for the Road.
Next up is Chapter 11: Vive la Résistance, where Sam joins the French Resistance and begins the final push toward Carcassonne.
