I'm a Ghost in My Second Chance
A measly argument led to Finn's sudden death. At the moment where Finn was losing his consciousness, a golden light descended in his classroom and enveloped his mates. Merely ruling it out as divine judgement, Finn didn't realize that they were being summoned to another world. Before he could be summoned though, he died. But because of his strong desires and attachments, right before the summoning ended, he became a Ghost. Using his uniqueness, Finn used the summoning gate that connected the two worlds to travel to a world that has tasted the blood of gods. On his journey through space, he evolved into a higher version of his new race. [Successful. You have evolved.] [You have become a Great Phantom.] Finn obtained new abilities, survived a land packed with strong evolved creatures and continued to grow stronger. "I'm not an ordinary Ghost, I'm an evolved one!" Finn didn't slow down his grind, he only aimed higher. For the life he desired in this world of survival of the fittest, he needed to surpass the pinnacle of his existence!
Fighting Against the Statue
The statue angel was a spiritual life form meaning she had only one direct weak point, that was her core-her dependence on material body was almost non existent at this stage. Cores were basically the heart for these spiritual life forms.
Extreme Spirit Body damage could also weaken them, but that's a more indirect route. This reason along with their perfect resistance against attacks with less spiritual damage made spiritual life forms hard to kill.
Finn was able to deal damage without it being reduced, but the Angel was more adept in combat even though she didn't have a Gift.
But she was clouded with madness and her body was still stiff from being a statue for more than a thousand years. This added to Finn's hope of being able to make it through the fight.
From within the iceberg, the statue angel forcefully broke the ice. This also caused the webs tangling her to break.