Greetings to any new players in this game, this is my path on how got in the game.
To follow in the best way this guide, you have to grind a lot but it will worth since the easy wins you are gonna get.
Actualy my main is the Kells Faction.

With the first log in, we will get Hua Mei N and 300 gold, good card to start to be honest.

Oh, all the parts of the guide are in written in "step-by-step" way, so you don't need to look for something but follow it how is written

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The enemies listing works as this exemple: Enemy=KindofEvolution/HowManyStars/Faction.

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The deck echanges works like this:

OUT (the cards we are taking off)
-1 (cards)

IN (the card we are putting in)
+1 (cards)

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ATK = Attack
HP = Health Points
SKILLS = Abilities

Then here we go with the first Choice. We have to pic a Un-Evolved 1star leader for our deck.
Pythia, Shambleau and Sakari
Unlike others cards which use only SKILLS (as passive and active), they use passivly Commander's Ability.

Actualy there is a little discussion here to do. Sakari has 25% dodge chance and since your deck
will be composed by 2 of this card too it mean that you may rng your way to victory putting this
card if you get the Draw Phase, but the commander power it's pretty shabby since isn't focused
on an element who you will encouter often.
Pythia on the other hand have all reduction on the most often elements of kells and with the
30% dodgin light, dungeon could be slighty easier, but doesn't have any dodge when is a card
but is balanced as Sakari.
Shambleau.. well i would dodge this at ANY cost since by my opinion is the most worthless.
Has no dodge as leader and his ability focus on higher damage aganist machine cards wich is
good but not on a 250 ATK card.

I picked Pythia since i made the choice to main Kells.

But at least it doesn't matters because the story will give protagonists as Leaders, just for Basic Decks.

Then we will catapulted in tha game. I won't explain the "story" to avoid spoilers and because i didn't give a KCUF about.
And here it comes the first challenge, let's play.. but first let's see our deck.

OUT
-Fairy

IN
+Hua

My choice it's to remove the Fairy and put Hua mey even if it doesn't fit in a kells deck, just because is strong.

This deck is pretty simple, we are gonna use Wraith as a wall for our defends, using his good ammount of HP and the passive ability to reflect damage.
Fairy are slot fillers.
Martyrs which are good but for now are slot fillers.
White Rabbit as high ATK or to Power-Ups our already set cards since the 950 ATK it's pretty good.
Salamanders are actualy cool because theyr ability let them attack 3 times randomly minions on the board, power up them with rabbit and you will have a fast and strong remover.
Sylph when we havn't rabbits as high ATK or Power-Ups.
Pythia as main ATK since is the strongest card of our deck (since permit us to evolve it too).
And Hua Mei, which is just good at everything.

Alice=Un-Evolved 1star Cybers Card Pack
Ghoul=Un-Evolved 1star Demonsss Card Pack
Angelos= Un-Evolved 1star Kells Card Pack
Nguyen Thi Tran=Un-Evolved 1star Neutrals Card Pack
Joutounin=Un-Evolved 1star Cybers Card Pack

And we, after the 5th pack, we will have Sylphy to whine us to open packs, open them and we will see.
Here i will list the good cards you can get from the packs, but be aware! My opinion is to buy only the Ultra-Evolved packs, because soon or later they are gonna replace the currently cards.

Demons:
Goblin (Active SKILL ally's card ATK, so why not?).
Dwarf (The Salamander Demons Version).
Imp (Best Boobs, realy).
Ghoul (Bunny Demons Version).
Yamiko (Active prevent enemy to ATK, so why not?).

Kells:
Martyrs (Only in evolved packs, because they are bad right now).
White Rabbit (As i said before, high ATK it's useful).
Salamander (3 attack as i said before).

Cybers:
Lovecraft (If you liked Goblin..).
Head of security (Preventing defence will be a lot stronger LATER).

Then you will get some Thropies:
Collect 10 unique Un-Evolved Cards.
The choice is very poor between Sakura Academy Elementary Schooler, Imp and Peach Tree Spirit.
I chosed Imp for the Boobs. All those are Un-Levelled, so pretty much bad.

Collect 15 unique Cards
Another bad choice.. Augmented Suit Squad, Lovely Jelly and Fairy.
Picked Augmented Suit Squad because she can 3 attack even if is a worse Dwarf.

Now you can choice to advance in story OR start to farm a little for some other easy Thropies,
My choice is to farm.

10 Unique Demons Cards
Goblin, Dwarf and Mermaid.
If you get this Thropy, it means you have them all but i picked Dwarf.

10 Unique Cybers Cards
Aquanaut, Lovecraft and Security Droid
As with Demons

10 Unique Kells Cards
White Bunny, Nymph and Martyr
as with Demons

25 unique Un-Evolved Cards
Intelligent Penguin, Succubus or Elf.
Now we have to make a choice, Elf is worse than Penguin and have the same power but Succubus has Boobs and prevent defense, i picked succubus.

30 Unique Cards
Satellite Weapon, Orc or Sister Cecelia.
Won't put since they are un-evolved, but those are 2stars! I suggest Satellite Weapon because has 3attack as active SKILL and Cecelia is bad.

Before we actualy start to fight, we will change our deck.

OUT
-2 Fairy
-1 Sylph
-2 Martyr
-3 Wrath

IN
+1 Satellite Weapon
+1 Succubus
+3 Imp
+3 Dwarf

Misaki Suseri=Un-Evolved 1star Cybers Card Pack
Kyuubi No Kitsune=Un-Evolved 1star Cybers Card Pack (This will be pretty unfair with the enemy that will put
Kyuubi No Kitsune 5star Demons Un-Levelled 1800ATK and 1800hp
Don't be afraid to restart the battle if it get too tough.)

Then we will unlock the Beginner bot (True farming gold, newbee level).

Gnome=Un-Evolved 1star Demonsss Card Pack
Bifrons=Un-Evolved 1star Demonsss Card Pack
Peach Tree Spirit=Un-Evolved 1star Cybers Card Pack
Peach Tree Spirit=Un-Evolved 1star Cybers Card Pack
Water Goddess=Un-Evolved 1star Cybers Card Pack
Wraith=Un-Evolved 1star Kells Card Pack
Goblin=Un-Evolved 1star Kells Card Pack
Dragon=Un-Evolved 1star Neutrals Card Pack (Both him and his card et half damage from Demonss,
Dodge 50% heat damage and has an absurd ammount of HP.. well, good luck!)

Evolved Card Packs are now out and it's time to farm and get them all!

And now we should get Thropys:
50 unique cards
Military Droid, BlackWinged-Angel and Holy Angel Olibanum.
Military Droid is the best choice due to his highest ATK and good Ability.

15 unique Cybers Cards
Ange Rikudou, Louise Little of TERRA and Aliens Hunter & Lorena.
All bad cards, Took Ange Rikudou because she is cute.

15 unique Demons Cards
Sphinx, Mummy and Naga.
Sphinx is a good Cybers removal and we will use OFTEN these kind of cards to clear the enemy board and hit the face.

15 unique Kells Cards
Disciple of Anubis, Pan and Harpy
Harpy is a fast ATKer who ATK in the turn we put it in BUT it's a Un-Evolved. We will pick Disciple because share.
the same effect of Sphinx but aganist Demons.

And now, let's go back to fight.

Naga=Evolved 1star Demons Card Pack
Dr.Irene=Evolved 1star Demons Card Pack
Hanako=Evolved 1star Cybers Card Pack
Arisa=Un-Evolved 1star Neutrals Card Pack
Cecile=Evolved 1star Kells Card Pack
Beatrice=Evolved 1star Demons Card Pack
Sylphy=Evolved 1star Neutrals Card Pack

Super-Evolved Card Packs.. You know what that means ? FARM CARD PACKS AND THROPIES.

Thropies:
75 unique cards
Aya&Nami, Backbeard and Exorcist Maria.
Aya&Nami has good hp and a lot of 50% less damage making her a good wall.

25 unique Cybers cards
Ninja Unit, coeurl & Io and Oceanographer.
Those are 3 star cards, we will eventualy get them soon or later. I picked Ninja Unit.

35 unique Cybers cards
Hitomi Kochou, Captain Schwarzchild and Porf. Jameson & Queen Zora.
I picked Hitomi beacuse Better ATK, HP and SKILLS.

25 unique Demons cards
Will-o'-the-Wisp, Shambleau and Youkai Yukionna.
Pick Will-o'-the-Wisp since has the highest ATK.

25 unique Demons cards
Dominion, Oracle and Ghost Eraser.
Pick Dominion for highest ATK.

Then we make a little change to the deck:
-Hua mei, Satellite, Succubus.
+Will-o-wisp, Dominion, Imp.

Then back to the fight!

Martyr=Evolved 1star Kells Card Pack
Metatron=Evolved 1star Kells Card Pack
StarVampire=Evolved 1star Demons Card Pack
Marchosias=Evolved 1star Demons Card Pack
Military Droid=Evolved 1star Cybers Card Pack
Cecelia=Evolved 1star Cybers Card Pack
Okeanis=Evolved 1star Kells Card Pack
Oracle=Evolved 1star Kells Card Pack

Normal CPU battles is on!

Prof. Jameson & Queen Zora=Evolved 1star Cybers Card Pack
Kagari=Evolved 1star Cybers Card Pack
Satan=Evolved 1star Cybers Card Pack
Undine=Evolved 1star Kells Card Pack
Minotaur=Evolved 1star Kells Card Pack
Louise Little of TERRA=Evolved 1star Neutrals Card Pack
Mi-Go=Evolved 1star Neutrals Card Pack
Sphinx=Evolved 1star Neutrals Card Pack
Calaeno=Evolved 1star Neutrals Card Pack

Unlocked Un-Evolved 2star Card Packs.. FARM!

Trophy:
35 Unique Demons
The Demons Vespar, Spectra and Lucy Hachisuka.
Despite Lucy has the higest damage, we are gonna pick The Demons Vespar.. man, 999 turns of no ATK ? Wow.

35 Unique Kells
Sylvia, Cordelia and Seraph.
We will take Cordelia, because Sylvia just cost too much and we already have anubis.

50 Unique Un-Evolved cards
Cecile, Arisa or Beatrice.
Cecile, highest ATK.

OUT
-Dominion

IN
+Cordelia

It's over, Un-Evolved 2stars are bad now. We will talk about good cards in those Card Packs when we will have them.
Let's go!

Will-o-Wisp=Evolved 1star Neutrals Card Pack (You have to kill the commander.. the only way is to kill minions.. well good luck!)
Vampire Hunter=Evolved 1star Neutrals Card Pack (Those sick dodges...)
Omunculus=Evolved 1star Neutrals Card Pack (High Hp enemies could give you an hard time, but hey, keep tryng.)
Count Strahl=Evolved 1star Neutrals Card Pack
Head of Security=Evolved 1star Neutrals Card Pack
Arisa=Evolved 1star Cybers Card Pack
Cecile=Evolved 1star Kells Card Pack (Those sick dodges...)
Beatrice=Evolved 1star Demons Card Pack
Lilith=Evolved 1star Cybers Card Pack

Evolved Card Pack and.. let's go to farm.

Now we can start to talk about those Card Packs.
In the Demons Card Packs we have some usefull cards as:
Star Vampire (For the face deck, you need both Evolved and SuperEvolved, for now we don't need it but if you plan to farm dungeons, get ready to take 104 of them!).
Sphinix (Hard-remove all Cybers on the field, but we will need the SuperEvolved one).
Homunculus (Good aganist Cybers decks in dungeon)
Mummy (Highest ATK, will replace Imp)

In the Kells we have some usefull cards as:
Water Goddess (Highest ATK, will replace Bunny)
Harpy (Same as Star Vampire)
Okeanis (Good Boobs and good for Kells only decks)

Thropy time:
150 unique cards
Kagemasa, Kyuubi and Cythilia
Cythilia, highest ATK + 3 attacks and prevent evolution. BEST OF THE BEST.

50 unique Cybers cards
TMA 0.5, Yuna and Magic Girl
Yuna by my opinion has best commander, ability and ATK. SKILLS could be usefull in situations.

50 unique Demons cards
Zashiki Warashi, Inazami and Shizuki Yagashira
Trough Inazami has the best Boobs, she is the worst.
Zashiki has the ability to half the damage from 3star enemies (which are a lot), 2 kind of dodges and a multiplier if we have spirits (which we have)
Or Shizuki that has Deny damage from 2star rarity Demons, Deny Water Fire Earth and Wind and more base ATK.
I picked Shizuki.

50 unique Kells cards
Ubbo-Sathla, Amaterasu and Metatron.
Picked Amaterasu

OUT
-4 Salamander
-4 Bunny
-4 Imp

IN
+4 Water Goddess
+4 Mummy
+Amaterasu, Cthylia, Shizuku and Yuna

And now, let's go!

Satori=SuperEvolved 1star Cybers Card Pack (You have only to kill every his monsters)
Yamiko=SuperEvolved 1star Cybers Card Pack
Taurus=SuperEvolved 1star Demons Card Pack (Have patience, have only to kill commander)
Gremory=SuperEvolved 1star Demons Card Pack
Gemini=SuperEvolved 1star Neutrals Card Pack (Have patience, have only to kill commander)
Demons Boy=SuperEvolved 1star Neutrals Card Pack
Leo=SuperEvolved 1star Neutrals Card Pack (Have patience, have only to kill commander)
One of the great race=SuperEvolved 1star Neutrals Card Pack
Shambleau=SuperEvolved 1star Demons Card Pack
Spectra=SuperEvolved 1star Demons Card Pack

Expert bot it's unlocked!

Sagittarius=SuperEvolved 1star Demons Card Pack
Demon Boy=SuperEvolved 1star Demons Card Pack
Scorpio=SuperEvolved 1star Neutrals Card Pack
Fairy=SuperEvolved 1star Kells Card Pack
Pisces=SuperEvolved 1star Kells Card Pack
Virgo=SuperEvolved 1star Cybers Card Pack
Metatron=SuperEvolved 1star Cybers Card Pack

OUT
-2 Oracle

IN
+2 Harpy

Imp=Un-Evolved 2star Demons Card Pack
Backbeard=Un-Evolved 2star Demons Card Pack
Misaki=Un-Evolved 2star Neutrals Card Pack
Maria=Un-Evolved 2star Cybers Card Pack
Monolith=Un-Evolved 2star Demons Card Pack
Black-Winged Angel=Un-Evolved 2star Kells Card Pack
Succubus=Un-Evolved 2star Cybers Card Pack
Librarian=Un-Evolved 2star Demons Card Pack
Cthylia=Un-Evolved 2star Kells Card Pack (This is pretty hard)
Cancer=Un-Evolved 2star Neutrals Card Pack
Capricorn=Un-Evolved 2star Neutrals Card Pack
Libra=Un-Evolved 2star Neutrals Card Pack

3star Card Packs in the shop, HERE WE GO!

The good cards in this Card Pack are:
Hikari has a good ATK and the dodge chance makes it better to fill the board.
Sakari has good ATK and the dodge chance, but doesn't fit in our deck.
Will-o-the-wisp HIGH ATK! We remove mummy now.
Military Droid HIGHEST ATK!
Holy Angel for his commander power to reduce Angel's costs.

OUT
-4 mummy
-4 water goddess
-Un-Evolved will-o-wisp

IN
+4 Hikari
+4 Will-o-Wisp
+1 Security Droid

choosed Security Droid over Sakari for the higher damage.
choosed Hikari over Oracle by Dodge chance, because 150 is just an inertia.

And now back to the front!
And it will be hard as the Hell!

Aya&Nami=Evolved 2star Cybers Card Pack
Satellite=Evolved 2star Cybers Card Pack
Sylvia=Evolved 2star Kells Card Pack
Librarian=Evolved 2star Cybers Card Pack
DR.Laban=Evolved 2star Demons Card Pack
Dimension Administrator=Evolved 2star Kells Card Pack
Tiamant=Evolved 2star Neutrals Card Pack
LAST BOSS=Evolved 2star Neutrals Card Pack

In the final charapters, game getting realy hard, if you need you can take off something and put Disceple Anubis and Sphinx.
Since they are gonna only be sacrified to kill enemies, put them at lowest level for mana saving.

This guide is made without dungeon/pvp/arena cards, but using them for getting an even easier game is okay.

I wish you a good game and to see you soon with another guide!