This page provides a walkthrough for the starting locations of the seventh chapter of Uncharted: The Lost Legacy - "The Lost Legacy". the chapter is very long and it is entire played in the secret city of Belur and it starts with a fight. After you have dealt with Asav's men, you will have to cross several abandoned locations. What counts here is thorough exploration to find the way to the destination point and collect all of the collectibles.
Right after the chapter starts, take a few steps forward to find a photo opportunity location (1/7).
After you have photographed Belur, reach the edge and jump towards the stone structure. This will activate snipers in the nearby ruins and starting here, you will have to avoid being spotted by them. Do not try to climb onto the stone structure, nor shoot at the snipers. Instead, move slowly towards them, while hanging down. In several spots, you will have to drop down but, regardless of the situation, take your time.
Climb up only after you have reached the last ledge, but only after you have made sure that you won't be spotted. Quickly, turn towards the large balcony and use hook and rope to get there.
Also, in the ruins proper, you should try to act from shadows, at least at first. Start by remaining on the balcony and wait for one of the enemies to come closer to eliminate him. You can also attack the rest of the men from hiding, but remember that at first, they will have the advantage of height. In this location, there is a crate (1/1) shown in the above screenshot, but there is nothing of interest inside.
Regardless of whether you have been spotted or not, grapple one of the hooks to reach the next area (inside the ruins, above the external balconies). It will be much more difficult to act from shadows here, because enemies are much better equipped and standing closer to each other.
You should be especially careful with the two opponents in heavy armors, similar to the one shown in screenshot 1, especially that they use machineguns. Against these opponents, it is best to use some powerful weapons. To obtain one, you could eliminate a regular soldier with an RPG (shown in screenshot 2) or a soldier with a launcher. Alternatively, you can also collect some of the C4 charges around and place them on the soldiers' route. Also, remember that heavy opponents move slowly and this makes it easy to escape them.
Your objective is to secure the entire area and, only after that, reach the large double door at the other end of this location. You can open it only by cooperating with Nadine.
Start exploring this area by jumping towards the yellow edges and jumping onto a medium-sized ledge. Take a look around and reach the area by the waterfalls shown in the above screenshot. Take a jump here, towards the ledges shown in the above screenshot and examine the small hole, where you find treasure (1/16 - Lakshmi Marriage Ornament).
Use j hook and rope to reach another ledge, to proceed on
Return onto the previous ledge, look up and climb over the ledges. As you climb, you can examine a stone head, but this is optional. Climb onto the ledge above, grapple the hook and start swinging. You have to jump towards the ledges up above.
Also here, you will have to climb, and you will have to use the hatchet several times. Right now, you have to reach an area with Ganesi statue, many ornaments and stairs on both sides. Check out the central part of the location and behind the tree, you will find treasure (2/16 -Hanuman Brass Bell).
Climb up the stairs to the very top and locate an opening above, where you can climb. Follow the narrow tunnel to get to a chamber with a swimming pool and two enemies in the distance. You can either fire at them straight away, or wait for them to finish their conversation. In both cases, the passage will collapse and you will have to find an alternative route.
Start by exploring all of the corners of this room, thanks to which you will find treasure (3/16 -Enameled Betel Box). Jump into the swimming pool and note the square hole in its central part. You can dive here and reach another location.