I can give you several ones, but the visual novels don't have an English translation as of now. Well, I can list some feats, and if screenshots are really necessary, I can post some too (In japanese, obviously).
There's several planet level characters in the first game (In both attack and durability), there's a lot of mentions of their power level during the VN, since the beginning it was said that Sakura's Lævateinn had the power to completely destroy the planet even though most of her power were sealed by the nine keys (Referring to the Norse Mythology), she can survive her own blast as shown in her fight against Yozakura (Her equal powerful clone), when the nine keys are released, it's said Sakura obtain sufficient power to blow up the entire Solar System, though she became a glass cannon and can only attack one time.
Ryuichi's Thorhammer is at the same level or even above Lævateinn (He parried Yozakura's Lævateinn to save Reiji) and Reiji's Fenriswolf is at the same level of Thorhammer (Reiji and Ryuichi have mostly the same power level during their fight, though Ryuichi have a higher attack potency due to Thorhammer Fullaccess), Reiji survived an Odin's Gungnir when he was almost without mana to defend himself, and this durability level applies to Ryuichi as well (Also, Reiji was tanking Yozakura's Lævateinn until Ryuichi arrived to help him).
About Odin, he created Valhala, yes. But to maintain that dimension he became extremely limited, at his full power it was said he was a threat to the entire galaxy, but he never used his full power in the entire game, so no Multi Solar System level bullshit for Reiji or Sayuki (Not in the first game anyway). In Sakura's route he had the power to destroy a Star at maximum, Reiji survived a blast of this level (Though he counterattacked with his full power Fenriswolf and tried to stop Gungnir, so I guess he only survived because he partially stopped it beforehand, I think the planet or large planet level durability would make more sense here).
Momiji's normal Judgement was said to be only a little weaker than Sakura's Lævateinn, Judgement: Limit Break have the same level as a Lævateinn, and Overload Judgement overpowered Odin's Gungnir in Sayuki's route. Talking about Sayuki, her Weiss Schwarz stopped 30% power Odin's Gungnir (That was said to be planet level) and Line Weiss Strahl damaged Odin's body, her Overload Weiss Schwarz was said to be strong enough to destroy the sun and the moon at the same time.
Speedwise, Sayuki is easily the fastest character of the game, she was seeing Momiji's Judgement (Which has seven times the speed of light) in slow motion, she also traveled a literally infinite distance, though it was using a specific skill. Ryuichi can move at the speed of light using Turbulence, and has FTL reactions (Can easily react to Momiji's Grimoire lasers and Ayane's strings), his Thorhammer Fullaccess has nine times the speed of light (Attack which Ayane easily reacted, and it escalates to Ryuichi too). In the end of Reiji vs Ryuichi battle, Reiji could move so fast that Ryuichi barely could react to his speed. Momiji can also barely react to her own attacks (So, relativistic, maybe? Though her only movement feats were dodge Sayuki's bullets), and Nagisa can react to both Momiji's Judgement in Momiji's route, and Sakura's Lævateinn in Sakura's route.
Outside that, it was explained that not even nucler bombs can destroy magic weapons, which is a feat almost all characters from the series can accomplish. Ayane can block a meteor big enough to destroy the Earth easily (Her power also blocked Odin's Gungnir, though it was Reiji using it), and can also cut through anything since she can produce infinite cinetic energy. Jin also easily blocked a Thorhammer.
There's a lot of other feats in the first visual novel alone, Kadenz Fermata brings a whole new level to the characters, a lot of other feats, and more evidences of the power level I already mentioned here. As I said, I didn't bring any screenshot from the game since it's in Japanese, but if you demand it necessary, I can bring it to you (Would be a pain in the ass, though haha, fortunately you can select a specific scene to see in the visual novel). If there's something more you want to know about some character or the game as a whole, tell me.
ontTalk/Durability_required_to_resist_the_heat_of_the_su
