The freaking OPENING was an awesome job. The song is very cool and has very strong lyrics. The images on the video just add, with the symbolism of the rider and human forms. It's amazing how well it was crafted.
The fences are also symbolic. How they are shown (Zangetsu pointing his sword to Ryugen and Kota's past and actual self) is awesome.
Bonus points for when Gaim is shown slashing a monster and then dancing with his team like nothing has happened. The monster, as we saw, is Yuuya, which just adds to the power of the sequence.
Not to mention the epic foreshadowing that the people made in between the opening and the actual episode. You know how you had the reflections? This happens again, but instead of Gaim Orange Arms' image... it's a more superior version's image... Like a Super Mode's reflection.
Even before the premiere ep, the "audience submissions" to Jyuden Sentai Kyoryuger has Kota's actor pull off some crazy stunts.
The very first scene, as Gaim and Baron charge at each other whilst leading two Inves armies, whilst Ryugen and Zangetsu watch from the sidelines.
You can see Kamen Rider Girdon with Baron's team, but he's not there for to long, so pay close attention, he charges in with the Baron team as well, helping fight the Gaim team.
The Super Hero Time bumper, where Kota's actor is challenged to rattle off eleven names (five Riders and six Kyoryugers.) And NAILS IT.
Helping a little boy come down after being stuck in a tree while Kota was fumbling around, looking for his Lock Seed. He even provides words of encouragement to the boy, much like Kota in the first episode.
Confronting his own crew member when he discovers that he has helped with cheating in the middle of an Inves match.
Handing over the Pineapple Lock-Seed realizing that it was the only way to defeat the monster.
#3: The debut of the Knight of Spear, Baron! Kaito really takes his time and lets his audience take in the wonder and excitement of the new Armored Rider. He is no slouch with his powers either, demonstrating that he may very well be an even more competent fighter than Kota.
Gaim and Ryugen delivering their own curb stomp battle to Gridon and Kurokage, taking their lockseeds in the process.
#7 Bravo effortlessly curb-stomping Baron, even with the latter summoning 3 Inves to help him.
Suika Arms debut, starting with Kota using it to roll over nearly a dozen Inves, then switching to Armor Mode to beat the pulp out of a handful more. When the last Elementary eats a good half-dozen Lockseeds and goes straight to its Evolved state (a massive boar), Kota lends Ryugen the Sakura Hurricane and they give chase, followed by a Curb-Stomp Battle.
While he doesn't win, Bravo still gets credit for his reaction to Suika Arms: to grab an iron support beam and trying to smash Kota with it!
#8 The debut of Baron's Mango arms. Complete with kick ass music in the background.
Baron and Gaim both using their finishers together to take out the Invess.
Mitsuzane effortlessly switching from sweet kid to bastard mode when Sid is around.
#10 The first time we see Takatora henshin. There was a small part where he tosses his Lockseed into the air before loading it into his Driver.
Micchy and Kaito fighting Invess without transforming.
Before Micchy and Kaito, Kota takes on 2 Invess at the same time and only getting hit ONCE. ONCE. He's really growing isn't he.
Oren manages to spot the Inves before the other Beat Riders, and the way he points them out is badass.
#11 blows all of the previous episodes out of the water running on pure awesome and Holy Shit Quotient. Here are the highlights.
Zangetsu going Hero Killer effortlessly curb stomping everyone in his way. He even interrupted the duel between Baron and Bravo.
Baron and Bravo's rematch. Baron shows that he's taken a level in badass in Mango Arms now on even terms with Implacable Man Bravo and basically fighting him to a draw before Zangetsu lays down the law.
How about before that where Ryugen is the only one out of all of them to hold his own against Zangetsu (his brother).
The sequence starting with the Invess invasion of the base camp, ending with an epic battle in the sky above Yggdrasil's HQ.
#12: Kota's fighting skills having improved to a point where he barely has to use a finisher.
He even took on 3 Invess (Kamakiri, Komori and Shika) that he fought before at the same time.
Zangetsu-Shin's debut. His new long-range weapon makes plowing through his opponents even easier...
#13: Baron (while in Mango Arms) temporarily gives Gaim his Banana Lock Seed, so they can battle Bravo.
The ensuing ass-kicking is just glorious and shows a lot of potential regarding future teamwork.
#14: The debut of the other three Energy Riders while appearing with Zangetsu.
#15: Basically all of Yoko Minato in this episode. Twice Kaito (and then Kota) try to attack Ryoma - her reaction is to open a nice can of whoopass on them.
Kaito's second plan involved throwing his playing cards at Ryoma's back.
Which fails, due to Yoko, actually throwing something at the card, stopping it mid-flight!
It was a pen. A pen that went through the card like a bullet.
Kota and Kaito showing off some sweet moves when fighting untransformed against the Kurokage Mooks.
Kota and Kaito managing to counter Sid's Energy Rider power with tag team Bike Fu and knock him to the ground long enough to escape. Considering how the Genesis Drivers are allegedly leagues stronger than their Sengoku Drivers, that's very impressive.
#16: The debut of Kamen Rider Gaim Jimber Lemon Arms. Damn, just LOOK at it!
Gaim and Baron pulling off their own rendition of Return of the Jedi's Endor chase scene as they systematically take down the Kurokage Troopers.
Mitsuzane finally becoming Ryugen again and beating the Kurokage Troopers by turning their hover bikes against them.
Kaito and Zack pulling a magnificent save of Mai and Chucky. Bonus points for the Lock they used to summon their Inves, it was the Kurumi Lock.
Jimber Lemon Arms, clearly puts Gaim on equal footing with the Energy Riders powerwise. His new finisher has him utilize both Locks in a style not unlike one of Decade's Dimension Finishers.
We learn that DJ Sagara managed to somehow pull off a feat that even Prof. Ryoma is surprised by. According to the Professor, no one should be able to access the area where he has the Genesis Driver prototypes and Energy Locks but him. However, Sagara pulled this off. It really shows that there are hidden depths to the guy.
#17: Kota kicking Bravo's ass in Jimber Lemon Arms, defeating him in one blow. Complete with a new song that, like all the others, is Awesome Music.
Oren couldn't land a decent blow after Kota transformed. Even his training can't match an S Class Lock.
All of Kota and Minato's fight. Showing us a fight between 2 Energy Riders and making a bow and arrow fight look like a downright gun-to-gun shootout.
Micchy pulled one off that was acknowledged In-Universe by Ryoma Sengoku saying "I think you might be even smarter than your brother": He was ordered by Takatora to reclaim Kota's Sengoku Driver, but when the critical moment came, he couldn't do it and started shooting at Yoko/Marika, his own support. Using his quick thinking, he comes up with an excuse: Yoko didn't immediately jump into the fight when Kota started curb-stomping Bravo, which Micchy uses as evidence that Ryoma doesn't want Kota to lose his Driver quite yet. Whether or not it's actually true, it apparently impresses Ryoma enough that he's willing to go along with it and even asks Takatora to let Micchy stay on with Team Gaim as The Mole.
#18: Showing just how well his constant fighting has trained him, Kota delivers a one sided ass-kicking to Bravo once he transforms into Jimber Lemon Arms, that manages to top the previous one. While even in his default Arms, he's able to keep Oren away from the Beat Rider teams - this really shows how far he's come as a fighter (it's one thing to win with a Super Mode against a guy who lacks one. Being able to hold him off in plain ol' Orange Arms now? That's not the tech, it's Kouta.) Also, in one attack, Kota WILL make you say "In your face, Pierre!"
Zack transforming to Knuckle. He literally beats the summoned Inves into submission.
DJ Sagara, going against Yggdrasil once again, broadcasting the Dance-Off for all to see, as the Beat Riders all pledge to just dance again.
A minor one, but Team Pop Up is the Kamen Rider Girls!
Not combat, but still pretty awesome: Mai getting together all the dance teams, then continuing when it looks like it's just them and Baron, and making sure the show goes on no matter what happens, be it bad publicity, low in-person audience turn-out, the music being sabotaged, Oren crashing the party, or monsters being sent in to break it up. Truly a Determinator who will not let the Beat Riders' dream die, no matter what.
The preview to #19 shows we're going to have Gaim Jimba vs Shin Zangetsu. This is going to be cool.
It was. The fight was much more evenly matched, but in the end Shin Zangetsu won. The fight ends epically too.
Despite his power-up, Gaim wasn't able to land a single hit on Zangetsu Shin, proving that he is still the strongest Rider.
Duke finally joins the fight. And if his casual entry in the episode before wasn't way to make an appearance, it looks like he's going to wipe the floor good with Gaim and Baron. In his own words: "I'm afraid I haven't done anything to suggest my combat inexperience."
He in fact does so, all the while demonstrating the most effortless and dynamic fighting style seen thus far.
And yet he still calls himself "inexperienced"...after easily fighting Gaim one-armed and shrugging off a direct hit.
Before the aforementioned Curb-Stomp Battle, Kota executed a series of awesome back flips◊ to avoid Duke's volley of energy arrows and it culminates in his transforming to Jimber Lemon Arms practically upside down in the air.
His transformation◊ is quite impressive. He catches the Orange with his feet and throws it into the Lemon Energy seed!
After Kota and Kaito's second attempt to break in was awesome. Kota using his Tuliphopper to decimate the Kurokage's troops' Tuliphoppers.
Along with the fact that Kaito using the Watermelon Arms was able to beat Sigurd. Showing that the Armored Riders aren't completely outclassed by the New Generation Riders.
There's a meta-example. After the battle with Kota, Takatora becomes more than willing to tell Kota his side of the story, with Kota accepting his offer. To fully understand how awesome this moment is, in the previous Kamen Rider shows, especially early Heisei Rider shows, two riders understanding each other was unheard of or would take a handful of episodes before that would happen (with the rare occasion of it all being undone in a single episode) and Poor Communication Kills becomes a major contributor to most of the Rider Vs. Rider conflicts. What Takatora did was essentially what most Kamen Rider fans complain about for years: "Why don't they just explain their case instead of beating each other?". Then Sid undoes everything by telling Kouta about Yggdrasil's little "blow everyone up" ring. It gets mitigated though, since Takatora expected Kouta to actually give up after he learned of Helheim.
The above's ante is upped in #20, in which Kota and Takatora, once sworn enemies, now transform together and finish off the Inves simultaneously, again harkening back to the age-old question of "Why don't they just team up already!?" for most old-school Heisei Riders.
In #21, Sid tries to break Kota even further by telling him that the rings of Yggdrasil tower were meant to nuke Zawame City in the event that it does become overrun by Inves. Despite the truth of Helheim forest eating away at his resolve, Kota gathers enough resolve to not only fight back against Sid, but also ultimately defeat him in Jimber Lemon Arms AND take Sid's Cherry Energy Lockseed.
Micchy bailing out Sid with an Inves attack was pretty well-planned for a desperate attempt, making it look like it was just a random Inves attack and proceeding to save Kouta right after.