Atonements is a main quest in Indiana Jones and the Great Circle. This walkthrough will guide you through all objectives of the Atonements main mission.
Rescue Gina
Locus has arranged a heck of a distraction. Time for Indy to make the most of it. Immediately, take a photo of the entrance.
Adventure Note #1: Excavation Office (80 AP)
Jump over the wall and head for the large tank on the right side of the gate. On the other side of that tank is a hatch you can open that will lead to the other side of the gate.
You can also use the wooden platforms to the left of the gate, but you will have to jump from one collapsing platform to another across to the other side, but it is more dangerous and then there is no way back. Either way you proceed, there will be guards that you will have to sneak past or engage on the other side. Try to avoid large engagements, take takedown opportunities where you can do so safely, and hide the bodies when you do.
The tunnel leads to a kennel where dogs are being housed. They cannot harm you, but their agitation as you approach will alert nearby Nazis in the area. In this area against the west wall is a note.
Adventure Note #2: Mersu Recipe (50 AP)
On the south side of the camp is a makeshift radio outpost. Find a letter on the desk across from the sets.
Adventure Note #3: Censored Letter (50 AP)
Right next to the radio outpost is a long tent. Inside you’ll find the area map.
West of there is the shower tent. There’s a bench with a magazine on it.
Adventure Note #4: Horror Tales #4 (50 AP)
North of there is an open mess area, with Nazis patrolling in the area. The next building to the north is the one where Gina is being held. Jump in through the window and deal with the Nazi in the room quietly. Be aware that there is also a Nazi captain in the next room who may be alerted by your combat, and could blow his whistle to alert reinforcements.
Before you free Gina, go into the next room and take a photograph of a model of the ziggurat.
Adventure Note #5: Ziggurat Model (90 AP)
Go back into the previous room and grab the Storage Room Key from the table.
Make sure that no one conscious is alerted to your presence, because you won’t be able to untie Gina while in combat. Unlock the door when safe, and untie her. Indy and Gina discuss what needs to happen next, and what was a rescue mission turns into an infiltration.
Get to the Ziggurat
Stealth is even more important now, as the giants are no longer providing a distraction. On the main road, stay in hiding until it’s safe to come out and take a photo of the ziggurat.
Adventure Note #6: Ziggurat of Ur (80 AP)
On the east side of the Ziggurat is another note, but you’ll have to carefully take down a few Nazis to do it.
Adventure Note #7: Excavation Plans (50 AP)
Approach the Ziggurat from the west side of camp, since the Nazis there all seem to be facing the other direction. Take them out one at a time with silent takedowns, advancing on the ziggurat when its safe.
Go the long way around the armored vehicles, and then climb up the dark staircase till you can jump to the scaffolding.
Gina will get you to boost her up, and she will swing a crane over that you can whip to. Once on top of the platform, turn around and look back towards the Nazi camp for a photo opportunity.
Adventure Note #8: Nazi Digsite (90 AP)
As you approach the top, you will hear the sounds of the elevator coming up and Nazis talking. You can ignore them or when they walk to the edge shove them off for maximum effect.
Get Down the Shaft
Go down the first elevator, then grab a note from a box on the way to the second elevator.
Adventure Note #9: Nineveh Document (50AP)
There’s no power to the second lift though, so you’ll have to climb down. Go around the second elevator and slide through the narrow gap. From there, carefully crouch walk across the ladder. If you try to do it while standing you could knock yourself off the platform. Then zipline down to the other side.
Drop down two platforms then whip yank the ring on the other side to form a bridge, though one with massive holes in it. Carefully hang from the edge then drop down, then jump across the remaining boards to the other side.
Now jump across the elevator shaft to the other side. Then climb the ladder to the generator. Flip the switch and you’re in business.
Jump back down to the elevator shaft and wait for it to come down to you. You and Gina get stuck partway down the shaft, forcing you to go exploring again. Whip up to the beam above the elevator and climb up, then swing across to a platform on the rock wall.
Look over the side of the platform, then carefully drop down to the precarious looking ledge below you. From there carefully walk across the beams all the way to the elevator.
Now that you’re closer you can see a beam blocking the elevator’s descent. Whip yank it out. The elevator will descend again, and you’ll be able to climb up into it to continue your descent.
At the bottom you will find the bodies of some of the Nephilim. Nearby, there is a stack of crates with a book on top.
Adventure Book #1: Ziggurat Guide
Go east from the crates and you’ll be able to take a picture of the Secret Vault, an easter egg you’ll revisit after the ending.
Adventure Note #10: Secret Vault (200 AP)
Head back to the previous room and continue going to the north. You and Gina will open the massive stone doors and a cinematic will play
Get to the Tent
Holy crap. Before you start moving, take a photo of Noah’s Ark.
Adventure Note #11: Noah’s Ark (200 AP)
Then crouch and move across the road to grab the sledgehammer, and take down the Nazi heavyweight across the way. Continue to the east, still crouching. Here wait until the heavyweight goes by, then follow him around the stone at the center of the room. Then hide behind it until the heavyweight reverses direction and goes around the other side of the rock, then sneak ahead into the next area. There, keep heading forward, keeping to the shadows until you reach a wall. Look up and whip climb to the top, then move to the other side of the platform until you can see the heavyweight patrolling below. You want to drop down once but wait until the heavyweight has his back to you before dropping down all the way and crossing the street. Grab a collectible by the gate before you pass by.
Adventure Note #12: Ark Analysis
Go around the trucks and wait for the heavyweight to be heading away from you before you make for the tent at the end of the compound. Once inside, a cinematic will play where Voss tells you about his master plan. Unfortunately Gina gets captures, so you and she will be witnesses of Voss’s victory. Or so he believes. Everything goes to hell, and when you regain control your goal is obvious.
Stop Voss
Block his strikes, but dodge his kicks. If you can get in counterstrikes that’s good, but not necessary to win. When he drops to his knees, go to finish him off and he will hit you with a sucker punch then use your whip to lash your hands together. Another cinematic where more insane things happen. At the end, you’re left hanging from your whip while you and Voss punch each other. You can only punch with your left since you’re hanging on with your right, so your 
/ 
button will instead kick, giving you some distance from Voss. Careful though, as he will use the distance to kick back and it can’t be blocked. When Gina calls out to you to grab her hand, look up and press 
/ 
to have her help you up. All you have to do now is watch the ending cinematic.
But when you’re done watching, there are still two more items to get from Voss’s tent, and an endgame secret to uncover!
Ancient Relic #1: Voss’s Tent (180 AP)
Adventure Note #13: Stone Research (50 AP)
Now with the last relic in hand, head back to the Secret Vault.
The last puzzle in the game is another relic puzzle where you’ll need just about every relic in the game to get the solution. There are four panels that need to be solved, and only once all four are complete will anything happen.
Adventure Note #14: Great Circle Mural
Automatically given when the Secret Vault puzzles are solved.
Once all four puzzles are complete, something interesting will happen and a character’s true fate will be revealed. If you’ve followed this guide, you should have gotten your Archivist 
trophy and your It’s the Mileage 
during the secret ending, and now you’re ready for The Order of Giants!
This finishes Atonements main quest in Indiana Jones and the Great Circle.
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