The fourth chapter ofDeliver Us Marsputs your exploration and climbing skills to the test. The puzzles are harder and the consequences are deadlier now that you’re on the Martian surface - you’ll need to mix bravery with caution if you want to reach the safety of the rover at the other end of Hershcel Quarry.
Related:Deliver Us Mars: Chapter Three Walkthrough
Some of the challenges in this chapter require precision timing, while others are simply a matter of patience and perseverance. If you’re stuck, use this guide to find your way forward as you explore the surface of the Red Planet.
How To Reach The Elevator At The Bottom Of The Quarry
When the chapter begins, Kat is almost out of oxygen after her trek across the Martian dunes. Proceeddirectly forwardand to the left, following the cliff wall, until you come to a building. The airlock will automatically cycle when you enter, replenishing your oxygen tank.
Inside, go upstairs to find another airlock, which leads back outside. You’ll find the main part of the facility there. Kat will automatically approach the cliff edge;move the camerato inspect various parts of the installation.
Start bylooking to your leftfor a set of mining equipment. Once Kat finishes assessing the situation, lookdirectly across the quarryfor a vehicle, just to the left of the two spherical structures. Finally, lookjust to the right of the equipment you initially inspectedto notice a lift.
With the quarry surveyed,walk to the leftuntil you come to a low point in the cliff face. You canjump down to small ledgesto quickly reach the bottom. Some of the ledges are barely visible, especially once you’re halfway down!
If you reach the elevator shaft within ninety seconds of inspecting it from the clifftop, you’ll receive theKats Always Land On Their FeetAchievement.
When you reach the lift, you’ll discover that it doesn’t have power. You may also notice that youroxygen is depleted by one bar.Climb the ladder to your right and enter the building at the top to replenish your air. Decrypt and view the hologram inside, thenproceed to the opposite airlockto head back outside.
How To Reach The STREAME Point In The Quarry
Make your way to the ruined equipment ahead of you, then turn right. Kat will notice a nearby STREAME tower that can be used to bring the elevator online. You’ll need to climb up to it.
Enter the decompressed building near the tower - note that youcan’t replenish your oxygen tank here.On the other side is a dangling platform that you can latch onto.Jump toward it and use your climbing picksto grab hold.
The timing here is extremely tricky - wait until the platform isalmost perpendicular with your ledge, then jump toward it. You’ll just barely be able to catch the bottom as you fall. If you miss, go back up the stairs and try again. For best results,aim upwardas you jump.
When you reach the left side of the platform,wait until it swings so that you’re over the opposite ledge, then drop down. Climb the crates andjump to the cliffside.This is a tough jump, so your best bet is toaim for the right side of the ledgewhen your platform swings closest.
Throughout this section, keep an eye on your oxygen levels. If you start to run low,return to the hologram roomto replenish.
Once you’re up the cliff,enter the building in front of you. View the hologram inside, then continue. Outside the rear airlock,look to your leftto find a climbable wall. Use your picks to ascend to the next level, thenjump across to the ledgebehind you.
There are some optional collectibles onboth the left and right sideof the next room. Once you’re satisfied with your search,leave through the exit on the far endand use your picks to climb across the wall to the left. Whatever you do, don’t fall - it’s a long way down!
When you reach the other side of the chasm,crouch underneath the pipe in front of youthen climb up to the next ledge.Carefully walk across the pipeto the exit on the far side. Enter the building outside the tunnels to restore your oxygen tank and start setting up the MPT lasers.
Related:Deliver Us Mars: Chapter Two Walkthrough
How To Power The Elevator
In this puzzle, you’ll be introduced to a new mechanic, theMPT Resistor.Inspect the tripod at the far end of the room with a yellow field over it. Kat will read the label, indicating that beams entering the resistor have their power reduced.
Start bycutting open the floor panelto access the nearest MPT emitter. Use both available emitters to power the panels beyond the glass; the left receiveropens the door,while the secondboots up the control interface.
Note that each emitter and receiver has adifferent power level.From this point forward, receivers need the correct amount of power to work; no more, no less. Aim the right emitter at the door lock, and the left emitter at the interface receiver.
Both receivers are getting too much power, soplace the resistor at the point where the beams cross.It can be a little tough to see what you’re doing since everything you’re working with is translucent, but Kat will speak up when the resistor is correctly placed.
Head into the control room andactivate the MPT interface.Aim the transmitterdown and to the left, aligning it with the receiver near the elevator shaft. The reticule will turn yellow when it’s in position.
With the elevator powered, the exit door on the left will unlock. Go outside andhop down the ledgesto reach the quarry basin, thenwalk across to the elevator.Hit the button to start riding up the cliff.
How To Reach The Rover
Near the top of the climb, the elevator will break down. When the safety rail falls away,jump to the climbable wall on the cliff face.Climbup and to the leftto reach the gantry above. Drop onto the top of the elevator, thenjump to the ledge on the other side.The elevator will fall behind you; there’s no going back.
Walk to the cliff face and start climbing; note thatnot all the wall sections here can be grabbed with your picks.You can still cross these hard sections; as long as your pick lands in a spot where it can find purchase, nothing else matters.
Climb up and slightly to the right until you can cross the section of hard rock to your left; from there, it’s an easy climb to the metal platform above. Once there,enter the tunnel.You’ll need to turn on your flashlight to see.
Inside is an industrial rock grinder. You’ll need to climb it to reach the exit at the top of the chamber.Wait for the moving section to pass, then climb on the bottom arm. When the moving part comes around,jump to climb on top of it.Immediately turn around, andclimb onto the stationary armas your platform passes under it. From there, you can climb to the top of the mechanism and reach the exit.
To get back to the surface, you’ll need toclimb the wall while avoiding grinder arms.From bottom to top, the arms come from the right, left, and right. Watch each arm as you approach the groove it’s left in the rock; if it’s coming,wait for it to passbefore continuing.
When you reach the top, it’s a short walk to the rover. By this point, your oxygen is probably getting low, sohurry to the roverto reach safety and trigger a cutscene.
Inside the rover, you’ll encounter a dream sequence. Walk across the hall to Claire’s room and speak with her, then go down the hall to Isaac’s room. After viewing the memory there,go downstairs to the living roomand approach the window on the left.
When Claire and Kat finish their conversation by the window,turn aroundand walk toward the back door. Follow Claire to the jetty in the backyard; when she jumps in the water,go back to the house.Walk around the right-hand side of the building, following Isaac to the barn. When you approach the barn door, the chapter’s final cutscene will play.
