[Loveless]

Imbue
Similar to Fiesta's enhancements you can imbue your weapon and armour to increase it's damage or other attributes. When you mouseover a weapon or armour, at the bottom of the info there will be a little note indicating what stat will rise when you imbue. Most weapons will raise intellect while armour will have either defense or health bonuses.

You are able to imbue at the Blacksmith with either your gold or treasure. It is highly recommended to use treasure (choose the second option at the Blacksmith) rather than gold for obvious reasons. Treasure is obtainable via quest rewards. Imbuing does not break your weapon but it will degrade; how many times it degrades is based on luck... it can go down one level or it can go down to 0 with one try.

Ethrelic
Imbues regular equipment (white names). Found via mob drops.

Condensed Ethrelic
Imbues star equipment (green names). Found via mobs in instance dungeons.

Embed
In addition to imbuing your equipment you are also able to socket in gems/jades to raise a certain stat. Your weapon will tell you how many times it can be embedded. You can only embed your weapon and/or armour with the same type of gem (ie. if you used Raw Jade of Fog, you can only use that to keep embedding). Embedding does not fail.

Armours generally do not come with sockets to insert gems therefore you will have to drill holes with Hand Drills. This will have consequences and it may break your equipment. So if you plan on increasing sockets make sure to do that first before imbuing or adding other gems.

Raw Jade of Fog
Increases intellect.
Raw Jade of Water
Increase resistance.
Raw Jade of Earth
Increases defense.
Raw Jade of Air
Increases mana.

Each gem can be 'fused' to create a higher tier gem. You will need two gems of the same kind and tier and a Smithery Goo (bought at the Blacksmith). Go to the Ancient Forge and fuse. Each fuse will cost some amount of gold/silver and it does have a chance to fail.

Raw > Crude > Common > Fair > Refined

Both imbuing and embedding will make your equipment glow.

Pets
Pets are essential in this game. They help to both support you with heals and/or buffs as well as providing additional damage. You are able to fuse with pets to increase certain stats (which is determined by your pet).

Pet Types
There are 4 types of pets which you are able to catch: fierce, cautious, bright, and normal. Each type specializes in a certain 'field' and their stat growth will be different.

Fierce: Tank/Melee Damage
Pets that are fierce will have higher HP, defense, and attack and is ideal to fuse with. They are able to learn passive skills to increase their HP as well as defense from scrolls. Your starter pets are Fierce types.

Cautious: Damage Dealer/Long Range/Debuff
They have skills to inflict DoTs as well as ensnare an enemy; their specialty is long range damage. They are great to have summoned for additional damage.

Bright: Healer/buffer
Bright pets are everyone's best friend. It is recommended to have one of these with you to heal you while fighting. Their intellect has the higher growth rate.

Normal: Jack-of-all-trades master of none
These pets have less than mediocre stats and will not prove to be all that great compared to those with actual effects.

Pet Fuse
You are able to fuse with your pet to boost your stats. Your damage will be halved; one half taken by you the other by your pet. Though keep in mind your pet's type; a Humanoid pet will take greater damage when faced with a Haunten type mob.

Pet Melding
Once your pets hit 30 they are available to meld via the Ancestral Forge. Pet melding allows for the target pet to have better stats overall and possibly change their types to a higher tier to learn better skills.

Their exp rate will also increase and will be easier to level. More information is in-game through the L button. It's something that is better for you to check out yourself. It isn't exactly a must-do thing as far as I can tell at the moment.