You can unlock Dark Hero Mode after beating the game and choosing the first choice; "Breathe life into me".
To play Dark Hero Mode, you must select a new game from the main menu. After watching the introduction video, and signing the contract, you will be asked:
"Enter into a Dark Hero covenant to face Super Heroes and tread upon an endless VS road?"
Pick yes to choose a victorious game save on your memory stick to copy. That savegame will not be deleted, and you can continue playing it. All the weapons, armour and Ka-ching you collected are transferred to the Dark Hero save, even the equipment that cannot be used.
In Dark Hero mode, you can only play one mode: Versus Mode. You can use either Ad-hoc or Infrastructure.
Upon beginning Dark Hero mode, you will get all your weapons from the completion file, and the following weapons:
- Ice Pike [St] +30
- Battachin +13*
- Horn of Homugai +13*
- Ichigeki +13*
- Claw x2
- Flaming Claw [St] +30
- Flaming Claw [St] +30
- Great God Scythe +13*
- Lightning Helm [Ar] +30
- Flame Helm [Ar] +30
- Ice Helm [Ar] +30
- Bacteon Greatshield +13*
- Cape of Ulysses +13*
- Ponteo the Victorious +13*
*Note: Items marked as +13 will vary from +10 through +15.
Dark Hero Mode is sadly an unfinished mode. There are many leftovers that can still be activated, though.
Unused content includes the following:
- Sukopon functionality
- Master Obelisk
- Chakapata disappearing (due to unlock flag not being activated in save file)
- Yarigami Sutra disappearing (due to unlock flag not being activated in save file)
- Slogturtle's first class skill cannot gain exp
- Covet Hiss's second class skill cannot gain exp
- Dark Hero Barracks
- Dark Hero Results Screen
- Gardsormr Ice Claws, Unique equipment for Ragewolf
- Bengal Tiger Claws, Super Unique equipment for Ragewolf
- Kaisak Ultimate Claws, Ultimate equipment for Ragewolf
- Deathsoul Scythe, Super Unique equipment for Ravenous
- Deathmoon Ultimate Scythe, Ultimate equipment for Ravenous
- As long as you finish at least ONE save file with the first ending choice, you may use ANY victory save file and gain whatever items from the new save file. This means you can finish the game, delete that save file, finish the game again with a different ending, and you can create a new Dark Hero save file from that second victory.
- Dark Hero Hideout is in reverse order from Normal Hideout.
- The Tip Defect to the Dark Side (right) will appear every time you enter Dark Hero Mode.