Enhancing equipment on your hero grants a BR Boost to your party, and also boosts the hero that has the equipment you enhanced on.

Enhancing costs gold, and gold is gain by doing dailies, quests, events, storylines, etc.

You have two ways of Enhancing your equipment.

First one, is Enhance x5  which enhances your equipment 5 times each time.

It's a fast method of enhancing.

Second one, is the normal Enhance, one by one , It's the same as the 5 one, but slower.

Can be used when you don't want to enhance your equipment +5 each time, and just +2/+3/+1 on some equip, to save the gold.

When your equipment set ( Sword, Armor, Belt and Helm ) all reach level 20, you will get a Enhance Master stat boost, which is : 

Next, comes the Refine tab.

In here, you refine your equipment using Refine stones, which are obtained by doing Hero Trials and daily quests.

The same rule applies here, Refine all 4 of your equipment to get a Refine boost.

Example : Refine all your equip to 20 and you get x% of basic stats on that hero.

Last tab, is the Enchant Tab. ( Opens at level 60 )

In here, you can Enchant Legendary and Mythic equipments.

How you can Enchant the equipments? With the shards you can get through abyss, events.

Like in the picture above, each time you enchant it, your ATK ( Like in the picture ), it increases the weapon's ATK.

The name is Berserker Sword, if you want to enchant it, you will need 120 shards of it ( and more ) in order to enchant it and get 1/2/max stars on it, and greatly increase it's stats and your hero's atk.

Recycle System : Here you can Recycle Heroes, equipments, Relics, Rebirth heroes, relics, equips, pets, etc.

Recycling a hero will give you Souls that are used in Hero Shop.

Recycling an Equipment will give you HellCoins ( used in Abyss ).

Recycling an Relic will give you Relic Essences ( used to level your Relic ).

Rebirth, however : 

If you Rebirth a hero, it will give you ALL the resources you've put on it back, but you will pay diamonds for Rebirthing.

Rebirthing a Relic, equipment will do the same.

Guild : 

Guild is a function that unlocks at level 20.

After joining a Guild, you get the benefits the guild has.

You have Guild boss daily 

Guild shop that you can buy stuff from ( by donating using gold/diamonds ).

Daily Free Gold

Guild Dungeon

Guild Tech

Donating in Guild will help increase it's EXP to level and also giving rewards to the entire guild when the progress reaches certain numbers.

You can only donate once per day, so choose wisely before donating.

Brave Seals are the items you use to buy from the Guild shop.

The more, the better!

Also a benefit from being a guild is that you can help ( and be helped ) by guild members to get heroes faster.

If you need 2 more shards for a hero to get it, maybe your guild has that hero's shards and can help you.

You can only donate ONCE to the same player.

By donating, you can get rewards such as Brave Seal or gold ( and more! )

You can Also Request :  

Guild Dungeon : Is a place where you fight " mobs " for treasure.

Choosing who to attack first and who to kill depends on how you use your attempts and strategy.

You have 5 daily attempts and can purchase more depending on your VIP Level.

Below, as you see, after killing the Mob, it shows the bonus it gives.

After all 4 mobs are cleared, you will get the treasure which contains : 

A chest with Random Legendary Hero, Diamonds, Souls, Refresh Tokens, EXP Scrolls, and much more!

Of course, the 3 rewards you see those are the " Jackpot ". You can be lucky to get them, or unlucky and pray for next time.

Also, you can only pick 1 chest per day.

When attacking a mob, you will get 20 diamonds bonus as being the Slayer reward ( and a Guild Announcement saying that you killed it, and receiving Brave Seals each time you raid it.

Guild Shop : Here you spend all the Brave Seals for various items, hero shards, refine stones, bless stones, and many other items that you wish.

Special tab in Guild Shop depends on your Guild Level.

The higher your Guild Level is, the more " items " it will unlock.

However, you can only buy these items ONCE!

Last one, Guild Tech : 

Here you Boost your stats ( ATK,DEF, AGI, hit, crit, dodge, etc ).

Studying costs Brave Seals. The higher your Guild Tech is, the more boost you will get.