Creator Breakdown: With many people going to college and others figuratively going mad, updates have already become few and far apart, with at least 2 people already pulling out temporarily to deal with their real-life issues.
Curb-Stomp Battle: Scinfaxi handed the good guys their ass in their first fight in Part 1. Orion does the same to Raven in one on one combat in Part 2.
Darker and Edgier: This rendition of the Kingdom Hearts story is more cynical than the regular title, yet still has an idealistic side.
Determinator: Raven will do whatever it takes to protect his friends, no matter what happens to him physically.
Dual Wielding: Raven used these early on in his fight against Dagr Scinfaxi in Part 1, and still carries a combat knife to Dual wield with his Keyblade. Chao is capable of dual- and even tri-wielding her Keyblade, while Hal dual wields short swords.
Parental Abandonment: Many of the characters in the RP has had at least one or both parents disappearing as their backstory. Raven's motivation in this is that he is searching for his father, who disappeared at the beginning of Part 1.
Retired Badass: Subverted, While Erieste is not as active as he was in the Keyblade War 15 Years Prior to the events of the RP. He keeps himself active in defending his homeworld before his disappearance. Averted with Reo Hamilton, who is now the commander of the Army of Light.
Reverse Grip: Raven does this in conjunction with his Firearm of choice.
Royals Who Actually Do Something: Chao is the Princess and Heir Apparent to the throne of Eastern Cloud, yet she also possibly kicks the most ass in the group and wields the mighty Pheonix Summon Spirit.
Laleth in her backstory, was also a Princess in her backstory, but is believed to have abandoned her title when she left her kingdom. Despite this, she's a half-demon keyblade wielder, who is a master archer and can summon demons.
Luna subverts this. While she's not a royal per se, she is the daughter of an aristocrat, said Aristocrat being the Elected Prince of Traverse Town. She also has the Shiva Summon Spirit, and is a capable Black Mage, without lacking in direct swordsmanship.
Both Raven (and by extension, his father Erieste) and Luna's last names are shoutouts to Otsdarva and Maximillian Thermidor from Armored Core: For Answer
Taken a step further with the introduction of Maximillian Thermidor himself.
Standard Sci-Fi Fleet: Both the Realm of Light and The Heartless now have their own fleets of Gummi Ships, with ships rivaling the size of entire worlds. Both sides have Aircraft Carriers (named Heavy Command Cruisers), AA Cruisers, Destroyers and Frigates as well as small scale Fighter Craft in similar vein to those from Kingdom Hearts, Mass Effect, Halo and Ace Combat, among others.
Super Soldier / Summon Magic: Skills can be augmented either by junctioning magic (similar to the system in Final Fantasy VIII) or by acquiring Summon Stones. Both come with drawbacks, as junctioning magic only slightly makes you more powerful, but it is safer. Summons on the other hand give you a large increase in power, but if not controlled can harm your allies. Chao is a special case in that she is born with the Pheonix spirit.