A different FF15 experience.
Ardyn mod allows you to use Ardyn as your main character and customize your party members on the go with a menu ingame.

You'll be able to use ALL Ardyn moveset: basic attacks, Royal Arms, Spectral Charge, Dark Tornado, Cerberus 0,
Shadowstep, Phantom fade, Counterosmosis, Phantasmal leap, Royal retribution AND Rising Phantom.
Ardyn will be in Overdrive (all battles start with 12 phantom arms, and will refill over time. Jumped attacks are also enhanced).
You won't have access to daemonifying on this version.

You will be able to summon Ifrit and use Firaga, Meteor Strike, Flames of rage and even Hellfire (though this one is just for visuals).

How? EASY.

1/Download Flagrum here
2/Launch the game with the mod Ardyn_mod_V2 on
3/ Load a save, you'll have your party with Ardyn (only) from start.
4/ Open main menu, then open and close "Icons" sub-menu (It's the menu that gives you explanations of ingame icons. Please refer to images if needed)

• All skills, levels, and actions (press summon Button to use Phantasmal leap) will be unlocked.
  

4'/ You want all Ardyn's hats and magitek boosters (MP 0 cost x99) too?

• Open and close Chocobo Rental Menu (no need to rent a Chocobo) to get all of it.
  

5/ You can Open a menu to change party members, anytime:

• Open main menu
• Open Archives menu
• Open either one of the menus inside to change your leader/party:
  

Photos: Ardyn (alone).
Dishes: Ardyn + Ifrit Guest
Fishes: Ardyn + Gladio + Ignis + Prompto
Bestiary: Ardyn + Noctis + Gladio + Ignis
Dossiers: Noctis + Ignis + Prompto + Ardyn
Datalog: Noctis + Ignis + Gladio + Prompto

Tips:

• Ardyn + Noctis + Gladio + Ignis party is the most stable. I recommend to start as Ardyn, switch to this party (BESTIARY), to "call"Noctis. Dont switch to Ardyn (alone) party to Noctis as leader if Noctis is not around, it will load Noctis from his last known position. You can change party almost anytime, but don't overuse it).
• To fix Ardyn Status menu not being visible (HP/MP bar), change party: open Ardyn + Ifrit, he will get his HP/MP. Switch back to Ardyn alone right after if you wish to.
• Hit counts (combos) will not be visible while playing Ardyn. Combos are still increasing though. Once you think you have reached 100hits, try to use Rising Phantom (once you get used to it you'll know when you reach 100 hits).
• You'll get access to Ardyn Nexus (Ability tree/ Descencion). Open the last line of nodes to get extra HP/MP.
• You can take most quests and mob hunts as long as Noctis is with you. Don't try story quests though, Ardyn is not supposed to be in any.
  
  

You can find instructions on how to use Flagrum here

This mod can be used anywhere. It might require you to have purchased Ardyn Episode as DLC to be functionnal.
Be careful to save before using this mod, and use it at your own risk.
Please read Instructions before use :p
It is a WIP. I hope it redeems (a little) Ardyn and the way he was treated through the whole game :/

Enjoy Ardyn Izunia!!
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Further Instructions:

With Ardyn you can:
- Fight (Royal Arms, Spectral charge Dark Tornado, Cerberus 0, Shadowstep, Phantom fade, Counterosmosis, Phantasmal leap, Royal retribution, Rising Phantom)
- Camp (and a ghost will cook for you if Ignis isn't in your party)
- Teleport to very high places usually not accessible (keep pressing summon button to activate it)
- Shop
- Take quests (not all, be careful. Use party with Noct inside to reduce issues)
-Talk to Cidney (I see you)
- Fight again.
- Change Ardyn's hat (ATTIRE) in equipment menu: CAREFUL though, equipment menu might freeze. Do not scroll down to attire, scroll UP to go access attire menu= You can change attire and close menu.

You can't:
- Do main story quests (unless you change back to orignal party using archive menus)
- Daemonize to gain phantom gear level (overdrive mode will help you cover that part)
- Drive Regalia as Ardyn (Noctis has to be the leader for you to drive. As ardyn you can warp back to car though)
- Ride chocobos.
- Initiate battle with weak/non aggressive monster. It takes more time and sometimes require Noct to actually attack them to start battle
- Ever go back to normal gameplay once you started playing Adagium. I warned you,:)

Known issues:
- Some BGM might not trigger as it should.
- Ardyn menu look partially like Noct's (a few more fixes are hopefully on the way)
- Equipment menu will be a mix of Ardyn and Noctis. You can equip standard swords to Ardyn to increase your stats, and change visuals too.
- In equipment menu, do not scroll down from weapon to costumes. It will freeze the game.
- Some battle sounds/voices are missing: Ardyn won't be as talkative as he usually is. I'm working on it.
- Ifrit does not load/come with you everywhere. He will mostly pop up, unleash his skill, and sometime stick around untilthe fight ends.
- Can't use daemonify. Yet. Episode Ardyn enemies will be integrated in a later update for you to enjoy daemonification.

Last note: Cheat Engine works fine with this mod: changing weapons, edit status, use infinite MP, and Jump and unlimited Phantom Rising.