The Dreg Heap
Location of Ring of Steel Protection+3, Dark Souls III
Location of Covetous Silver Serpent Ring+3, Dark Souls III
Location of Lothric War Banner, Dark Souls III
The Dreg Heap and Earthen Peak Ruins have several items that temporarily boost your stats. Start from The Dreg Heap bonfire and navigate to the Earthen Peak Ruins bonfire. Along the way, kill the summoner who spawns the Angel. Light the Earthen Peak Ruins bonfire and warp back to The Dreg Heap bonfire. Collect the Ring of Steel Protection+3. The ring increases by 17% the absorption of physical damage. Like the regular (+0) version, you do not really need this ring because your HP is too low to tank attacks. You should be baiting attacks and go in for the punish. However, the ring is there in case you need it. Grab the Covetous Silver Serpent Ring+3. The ring grants you 35% extra souls from each defeated enemy, useful whenever you need to farm souls to purchase weapons, consumables, etc. Find Amnesiac Lapp and exhaust his dialogue to trigger him to relocate to the Earthen Peak Ruins bonfire. Pick up the Lothric War Banner. The weapon art of this spear buffs your damage output by 15% for 120 seconds. The downside is that you must hold the weapon in one hand for the buff to last the entirety of 120 seconds. One-handing or two-handing the weapon is OK, but you cannot two-hand a weapon while the Lothric War Banner is left hanging behind your character's back. You gain the greatest benefit from the buff of the Lothric War Banner provided that you plan on using this weapon to attack an enemy or boss, or you one-hand another weapon to fight. Continue on to the Earthen Peak Ruins bonfire to find Lapp squatting nearby. Exhaust Lapp's dialogue and warp back to the Earthen Peak Ruins bonfire. Continue warping back to this bonfire until you see Lapp standing near the bonfire. Then exhaust his dialogue again to receive a Titanite Slab.
SL1 Safely run to the Within the Earthen Peak Ruins bonfire, Dark Souls III
SL1 How to kill the second Angel at Earthen Peak Ruins, Dark Souls III
Location of Ring of Favor+3, Dark Souls III
The only item worth collecting at Earthen Peak Ruins is the Ring of Favor+3. This ring increases your maximum HP by 6%, your maximum stamina by 12%, and your maximum equip load by 8%. The ring is useful for situations where you need to setup a tank to help you survive a boss long enough to learn the boss' attack patterns. The swamp area where the ring is located is guarded by an Angel. Of all three Angels at The Dreg Heap and Earthen Peak Ruins, the Angel at the swamp is the trickiest to avoid and run past. You can survive the run to the summoner who controls this Angel. Equip the Ring of Favor and the Prisoner's Chain to boost your HP, stamina, and maximum equip load. Equip the Grass Crest Shield to boost your stamina regeneration. Your maximum equip load can be further increased by equipping Havel's Ring. To boost your magic damage absorption, equip the Magic Stoneplate Ring, consume a Blue Bug Pellet, and cast Magic Barrier. You need to equip the Priestess Ring to allow you to cast Magic Barrier, after which you can swap it out for Havel's Ring and unequip the talisman you used to cast the miracle. Equip these armour pieces for high magic defense while maintaining your weight ratio below 30%, thus allowing you maximum sprinting speed: Cleric Hat, Maiden Robe, Sorcerer Gloves, and Pontiff Knight Leggings. Another strategy is to use Hidden Body and equip the Slumbering Dragoncrest Ring. Make your way to the summoner. Defeat the summoner and you should be able to collect the Ring of Favor+3 without being harassed by the Angel.
Demon Prince
SL1 Demon Prince, Dark Souls III
Bleed is recommended for dealing damage to this boss. Two-hand the Warden Twinblades+9 (or +10) and infuse it with a Blood Gem and attack with L1. This weapon can cause the boss, in both phases, to be staggered a number of times.
The first phase is a gank fight where you face the Demon in Pain and the Demon from Below. This is the more difficult of the two phases because you must constantly dodge the attacks of one demon while dealing damage to the other demon. The second phase can be made easier by killing, in phase one, the Demon in Pain first followed by the Demon from Below. The best window to attack is when the Demon in Pain is in embered state while the Demon from Below is unembered. Concentrate on getting in one or two hits and dodge the attacks from the unembered Demon from Below. When the Demon from Below is in embered state, run away from this demon while also keeping an eye on the unembered Demon in Pain. Patiently wait for the Demon in Pain to be in embered state again and the Demon from Below to become unembered so you can concentrate on attacking the embered Demon in Pain. Rinse and repeat until the Demon in Pain is the first demon to be defeated. With one enemy down, the Demon from Below is a lot easier to handle.
During phase two, you face the Demon Prince. Assuming that the Demon in Pain was the first to be defeated during phase one, the Demon Prince should be easier to deal with because he has a laser attack that is easy to dodge. Had the Demon from Below being the first to be defeated, the Demon Prince would have an attack where he summons a bunch of fire orbs that shoots a barrage of fireballs, followed by a shower of fire meteors. You want the Demon Prince to only have the laser attack so you can easily run behind him to punish. When the Demon Prince jumps backward up in the air, he would follow up with either of two attacks. One possible follow up is a fireball. The other possibility is an area-of-effect ground slam. A similar ground slam attack is where he pounces at you. In general, stay close to the boss and behind him or to his side, get in one hit, and be ready to dodge any attack. By being close to him and pressuring him, the boss would be less likely to perform one of the aerial attacks. The laser attack is well telegraphed. The boss would charge up a gust of wind to knock you backward and then he jumps backward to charge up his laser attack. If you are close enough to the boss, you can roll through the gust of wind and dash towards the boss. Stay behind him while his laser sweeps out an arc and get in as many hits as possible. As soon as the laser arc is done, he would charge up a final laser attack that has an area-of-effect. Move out of the range of the area-of-effect, then dash in for one or two hits.
Defeat the Demon Prince, grab the Small Envoy Banner, and take a ride to the Ringed City.