Slyrak burning the entire city of Leathsham.
Luna’s Lucent Beam which comes from the second moon makes a crater.
The final clash between Slyrak and Kaden destroys the top of a mountain.
Here is Mirana’s arrow reaching the moon and summoning multiple falling magic arrows from the moon.
Lina flies into outer space in a few seconds and attempts to hold back the continent-size meteor.
Seems most major characters can fly into outer space in a few seconds.
Davion fights against Terrorblade.
https://youtu.be/CVXR8OlED0s
Davion fights against Invoker.
https://youtu.be/VYY7yWjRKMo
Invoker and Filomena fight against Arc Warden.
https://youtu.be/sug4lbupKmY
Invoker uses the Eldwyrms' souls to remake the universe.
https://youtu.be/1CE2Mkdqzv8
Mirana resets the universe.
https://youtu.be/UolLbfHhPv0
Here are the relevant feats, statements, and calcs from the game.
Terrorblade destroyed a parallel dimension of similar size to the main universe right after he gained control of his reflection of his soul and his reflection of his soul is described to have "unimaginable power", something that only Io or gods have been described to have.
Zet, the Arc Warden, is the strongest fragment of the universe’s mind. He possesses a power greater than the combined might of Radiant and Dire. These two were inadvertently distorting all of creation through their clashes. With the sheer magnitude of his strength, Zet could overcome both siblings in a single blow and traverse the cosmos.