Abyssal Armor Shard Locations
After you raise the 3 angelladies +swords and are back in the courtyard, climb up on the box, climb up and use the crossblade against the vine, box in the next room contains first shard.
Once your receive your chaos form, towards the inside of the building(south) and there will be an upper level with a bomb on a red block, throw your throwing weapon to blow it up, climb up the colomn and collect your next shard.
Enter Drowned Pass, go straight ahead enter the water, turn left and go down, youll come to an area
(north east corner of the map) with a chest containing your 3rd shard.
4th - After earthcalling and freeing the rock giant door in the drowning pass area you will receive this shard.
5th - The Hollows, after the first room that has the 3 vents either side of the room, there will be a dual rail track and youll get block in. You will fight one of the dragon looking mobs with the fire hands and some fishy crawlers. Once you beat them, the walls they crash through, both contain a chest one has another armor shard.
6th - Iron Canopy
After you get the abyssal chain, youll come to a room with 2 teeth plant a beholder door and a blue swing orb with some growth infront of it, climb up the growth, swing across the next blue swing orb, then R3 look up and grapple up to the orange orb, collect the chest inside this room
7th - Black Throne
once you go down the spiral staircase (heading toward 3rd power golem), use the void on the wall and the spinning rock, to get to the other side. Place a new void on the wall, and make sure void still on spinning rock.
Timing is everything here, use the abyssal chain on the bomb, throw it throw the hole, when the spinning rock is facing the red puzzle door. Then use the void when it is facing the next portal design on the wall. Open chest, abyssal armor shard yours.(this is right next to the beholder key puzzle)
after you use the shadow mask to cross the bridge(directly after the War vs war fight. Head east, there will be a passage on the map that goes behind a water fall. Make sure you still have your shadow mask turned on. Open chest and gain another abyssal armor shard.
9th - you need to have the shadowflight form to be able to get this one.
Goto Scalding gallows, right next to Vulgrim is a small wall then a huge hole looking directly over to where Samael's prison is. If you look down there is a tiny ledge.
Take a run and jump then activate the wing glide down, follow this path up and the 9th shard is yours, only 1 more piece to go.
10th - and final piece.
About Half way up on the eastern side is a patch of land (sort of looks like a boot). Head to the north end and turn on your shadow mask.
Shadow flight up onto the platform, run to the end, and there will be some abyssal chain orbs, use these and swing across. Run on ahead and turn right to face the drilling, you should notice another orb.
Stand right on the edge of the ledge, and Abyssal chain over, walk around the top of the platform to collect your final piece.
This achievement is now yours and the Abyssal Armor allows you to take more damage.