Secret cow level
The item required to unlock the secret cow level is the Staff of Herding. To craft it, you must obtain its recipe, five rare items, and 150,000 gold under the Normal difficulty setting. The recipe appears in Act 4 under the Normal difficulty setting, from Izual. The items required for the recipe are as follows. Each of the items bind on acquire and cannot be sold or traded.
Wirt's Cowbell: Purchase for 100,000 Gold in Act 2 from Squirt the Peddler in the Caldeum Bazaar, under the "Miscellaneous" tab sold.
Black Mushroom: Collected in the Cathedral in Level 1 of Act 1. Select the mushrooms to find it.
Liquid Rainbow: Found in the Mysterious Cave located at the Dahlgur Oasis in Act 2. Find Zevan the Alchemist outside a boarded up cave, and he will be attacked by vultures. This is a random event, if he does not appear, exit and repeat. Rescue him, and he will open the Mysterious Cave. Once inside, find the Mysterious Chest that spawns randomly at any location. Re-enter the cave and explore it entirely until it is found. time you enter you may need to explore the entire cave before giving up. The Liquid Rainbow is inside the Mysterious Chest.
Leoric's Shinbone: Found in Leoric's Manor in Act 1, appearing randomly in the fireplace.
Gibbering Gemstone: Dropped randomly by Chiltara in the Caves of Frost, before you reach the bridge in Act 3. Search the caves in the Battlefields.
Craft the Staff of Herding and find a dead cow in Old Tristram, west of the road. Use the Staff of Herding to open a portal into Whimsyshire. To reach higher level versions of the secret area, you must make special new versions for each difficulty setting.
Monk Skill setup
If your chosen character class is a Monk, use the following skill setup to become very effective against almost all enemies. To start with, set the Primary Attack to Way of the Hundred Fists and attach the Rune Hands of Lightning. For the Secondary Attack, choose Wave of Light with the Explosive Light rune attached to it. For Skill Button 1, choose Blinding Flash with Blinding Echo as the attached rune. For Skill Button 2, choose Exploding Palm with Strong Spirit as the attached rune. There are various options for Skill Button 3. If facing a Boss, choose Mystic Ally with your choice of rune. In normal game play, choose Seven Sided Strike with the Several Sided Strike rune attached to it. For Skill Button 4, choose Mantra of Retribution with the Retaliation rune attached to it. For Passive Skills, choose Transcendence, Seize the Initiative, and Pacifism. This setup will allow you to handle any situation that is thrown at you. Note: If surrounded, use the secondary attack. It will clear the area and heal you at the same time. Blinding Flash is also very useful.
Farming experience, gold, and items
Select the Act I quest "The Legacy Of Cain - Explore Cellar" segment. Take the waypoint to The Old Ruins and go north, then east. Go down the cellar to encounter a named mob (Captain Daltyn) and his minions. Kill him for at least one magic item and some coins. Loot the cauldron for at least one health potion. Talk to Leah for quest completion experience and gold. A loot chest also appears 40% of the time. Exit and repeat. The good thing about this method is that the pathway never changes. However, you will keep hearing a Tristram Militia whining about how he promised to save Marko and he did not.
Easy life potions
When you enter an area that gives you a life potion or chest, make sure to collect them. Then, leave the game and resume it. The place where you clicked on to get the previous potion will give you another potion every time. Note: There may not be always a chest; if this happens, leave the game and resume it. Most of the time another chest will appear, and the treasure will vary from an item to gold, or both.
Removing quest text from chat
Open the "Sound" options and uncheck the "Show Quest Dialog in Chat" option in the bottom right corner.
Begin a game with the companion to be duplicated. Join a friend's session that is in a different act. Then, quit the session with your friend and continue playing alone. You should have a duplicate companion.
Complete the following tasks to unlock PlayStation trophy rewards.
Diablo III: Reaper of Souls Platinum Trophy (Platinum): Collected all other Diablo III: Reaper of Souls trophies.
Deep Pockets (Bronze): Pick up 500,000 gold.
The Comfort of Strangers (Bronze): Recruit the Templar, Scoundrel, and Enchantress.
Up All Night To Get Lucky (Silver): Equip all Inventory slots with Legendary items that have a minimum required level of 70 or higher.
Breaking Not So Bad (Bronze): Use a merchant to repair an item.
Socket to Me (Bronze): Socket a gem in an item.
A New Start (Bronze): Complete 5 Bounties.
Batting 500 (Silver): Complete 500 Bounties.
Just Riffing (Silver): Kill 500 Monsters while in Nephalem Rifts.
Dashing through the Rift (Silver): Finish a Nephalem Rift within 15 Minutes.
The Mad King's End (Bronze): Kill the Skeleton King.
Butchered! (Silver): Kill the Butcher.
The Last of the Horadrim (Bronze): Complete all quests in Act I.
The Coven Overthrown (Bronze): Kill Maghda.
Murderer. Torturer. Monster. (Bronze): Kill Zoltun Kulle.
The Lord of Lies (Silver): Kill Belial.
The Black Soulstone (Bronze): Complete all quests in Act II.
The Ravening Beast (Bronze): Kill Ghom.
Making a Breakthrough (Bronze): Kill the Siegebreaker Assault Beast.
The Lord of Sin (Silver): Kill Azmodan.
The Wages of Sin (Bronze): Complete all quests in Act III.
The Prime Evil (Silver): Kill Diablo.
Victory and Sacrifice (Bronze): Complete all quests in Act IV.
Fire in Your New Boots (Silver): Kill Urzael.
Her? (Silver): Kill Adria.
Death Do Us Part (Silver): Kill Malthael.
Don't Fear the Reaper (Bronze): Complete all quests in Act V.
Above & Beyond (Hardcore) (Gold): Reach level 70 in Hardcore mode.
Reign of Terror (Silver): Kill Diablo in Hardcore mode.
May His Death Satisfy You (Silver): Kill Malthael in Hardcore mode.
Above & Beyond (Silver): Reach level 70.
Dream Team (Gold): Reach level 70 with 6 different classes.
The Elitist (Silver): Kill 500 elite (champion, rare, or unique) enemies.
Greed over Need (Silver): Kill 100 Treasure Goblins.
Demolition Derby (Bronze): Get a destruction callout for breaking 50 objects.
Made to Order (Bronze): Craft 5 items.
Custom-Fit (Silver): Craft 100 items.
Forged Credentials (Bronze): Raise the Blacksmith to level 12.
Gemkata (Bronze): Raise the Jeweler to level 12.
Maximum Myriam (Bronze): Raise the Mystic to level 12.
I Feel So Enchanting (Bronze): Enchant all your equipment slots.
Trade-in (Bronze): Replace a property with Enchanting.
A Mystical Meeting (Bronze): Acquire the Mystic.
Bejeweled (Bronze): Combine gems.