To activate the Water Harp, you will need first need to pull the lever at the top floor of the building on the other side of the door to the left of the harp. You will have to traverse a series of regions to access the other side of the door. Once the lever is pulled, the water harp will now activate when the correct pins are input.

The Water Harp instructions can be found in a book on a table inside the building. There are eight symbols in the book, each symbol refers to what pin on each row to set. Horizontal lines indicate that no pin should be set.

1st row: Fifth peg
2nd row: No peg
3rd row: Fourth peg
4th row: No peg
5th row: Third peg
6th row: Fourth peg
7th row: First peg
8th row: No peg
Completing this song will lift the bridge to the Ravager's Lair. Talk to the Flautist after playing this song, and he will play the secret song needed to access the next reward.

1st row: First peg
2nd row: Fourth peg
3rd row: No peg
4th row: Second peg
5th row: Fifth peg
6th row: No peg
7th row: Third peg
8th row: No peg
Completing this song will award you with the Bolt Driver (hand gun).[remnant2.wiki.fextralife.com] Speak to the Flautist after playing this song and he will gift you the Scroll of Binding (crafting material).[remnant2.wiki.fextralife.com] This can be completed both before and after the main boss fight.

There is an invisible doorway on the wall between the two staircases leading up to the tower. When entering through the doorway, you will find a dial puzzle leading to a locked door. To solve this puzzle and open the door, you will need to memorize 4 glyphs. These glyphs can be found on the elevator. To see them, you will need to step on the elevator and then back off. As it ascends the tower, memorize the 4 glyphs on it. The glyphs will be different in each new playthrough for this event. They must be entered in exact order starting from the OUTSIDE ring, aligning with the central arrow pointing upwards. Behind the door, you will find the Blooming Heart (relic).[remnant2.wiki.fextralife.com]

To solve this puzzle, you must find all 4 of the glyphs scattered throughout the map, and memorize them. The order in which the symbols are input does not matter, so long as all 4 align with the central arrow pointing upwards. The symbols are the same for every run.
The unlock is as follows:
Turn the first dial once.
Turn the second dial twice.
Turn the third dial three times.
Turn the fourth dial four times.
Doing this will open up the floor to a ladder that leads to the Crossbow (long gun).[remnant2.wiki.fextralife.com]

If you enter the Imperial Gardens while a Blood Moon is active, there is a path to the left of the ruin's entrance. Nearby, there is a trap door with a golden full moon crest. This door will only open during a Blood Moon. This door leads to the Full Moon Circlet (amulet).[remnant2.wiki.fextralife.com]
This amulet, or another amulet with the same sigil will unlock the Misty Step Dodge when paired with a ring that also has the same sigil.

To solve the Wind Tower puzzle, you must stand in each of its doorways in the correct order. Each doorway has a glyph that represents its floor number. Each doorway will play a sound, and the wind rising up the tower will sparkle in each doorway, but only when standing in the correct order. If the wind does not sparkle, you will have to restart from the correct doorway.

The solution to this puzzle is found in a book inside a hidden room. To reach this book, you will have to drop off the ledge to the right of the tower, facing a waterfall.

The order for Single Player is as follows.
3rd floor
2nd floor
1st floor
3rd floor
When completed, The Wind Hollow Circlet (ring)[remnant2.wiki.fextralife.com] will rise from the ground.

For co-op, two players must stand at different floors at exactly the same time. The order for Multiplayer is as follows.
5th and 2nd floors
4th and 3rd floors
4th and 2nd floors
1st and 3rd floors
When completed, the Band Band (ring)[remnant2.wiki.fextralife.com] will rise from the ground.

This event can be completed by shooting the crystal faces of the 4 statues in the room. Doing so will open up the floor in the center of the room. The chamber at the bottom of the elevator contains a chest. The chest contains the Lithic Signet (ring).[remnant2.wiki.fextralife.com]

There is a stalking statue in the chamber that will quickly follow you when you are not looking in its direction. There is a second one at the top of the elevator as well. If a stalking statue catches you, it will one shot you. To kill them and get their loot, approach them up close and backstep when they start to swing. Begin firing into the crystal in their face immediately. You may have to repeat this process a few times to kill them, as they are invulnerable when standing still.

Game Solution:
1. Middle - Top Middle
2. Bottom Middle - Bottom Left
3. Bottom Left - Middle Left
4. Top Middle - Middle
Completing this game will unlock the Royal Hunting Bow (long gun).[remnant2.wiki.fextralife.com]
Note: Different moves on the game board will open and close different doors in the level. This can allow a second player to pass through the doors to obtain hidden items whilst you move the game pieces. Standing under doors while they close will instantly crush you.

After fully ascending the Clock Tower, you will find the Timekeeper's Jewel (ring)[remnant2.wiki.fextralife.com] in a chest.

The make the Hewdas Clock start ticking again and complete this quest, you need to visit the Lemark District and solve the clock puzzle to open it. Opening the clock will drop the Clockwork Pinion (quest item)[remnant2.wiki.fextralife.com] which can be inserted into the gears at the top of the Hewdas Clock Tower. Doing so will award you the Broken Timepiece (crafting material).[remnant2.wiki.fextralife.com]

To solve the clock puzzle, look at the time on the Hewdas Clocktower. Copy that time into the clock puzzle in the Lemark District.

1. At checkpoint, take the Stellar-Powered Cell (SPC) out of the door to the right.
2. Take the path up the right to the next door. Put the SPC in this door.
3. Take the elevator to your right.
4. Go left through the door with the second SPC in it.
5. Go up the path till you reach the bridge. Jump onto the bridge.
5. Proceed down the bridge path and pass through the automatic door.
6. Go across the room and take out the second SPC.
7. Go to your right and take the elevator down.
8. Take another right and use the SPC on the door.
9. Take a right again and go up the next elevator. Grab the Samoflange (amulet).[remnant2.wiki.fextralife.com]
10. Take the elevator back down. and take a left. Grab the SPC.
11. Take the next elevator up to your left.
12. Go up the path to your right, and use your SPC in the first door to your right at the top of the path.
13. Take the next elevator down.
14. Proceed into the room ahead and defeat E.D. Alpha.
15. Grab the Stone of Continuance (ring).[remnant2.wiki.fextralife.com]
16. Take the elevator you used to come down back up again. Take out the SPC.
17. Take the path down to your right, and then take the elevator down to your left.
18. Step on this same elevator and then back away from it.
19. On full health, jump down the hole. Place the SPC in the slot found at the bottom.
20. The door to your right will open. Enter this door to find the Shielded Heart (relic).[remnant2.wiki.fextralife.com]

The flashlight given to you by Ford has the number code on it.
Enter 0415 in the office lockbox to unlock it and get a key.
Head north through the chainlink fence to find the MP60-R (hand gun).[remnant2.wiki.fextralife.com]