I think the best way to get stronger is too use the level 5 earth exit trial. Try and join high-level level parties (even as a porter or a scout) and once the high level beasts are killed the mc can take the spirits. Unless if its dependent on who kills the beast. Then mc can steal last shots and take the spirits. Because survivability will be much higher and better rewards outside the trials.
Levster200
I think the best way to get stronger is too use the level 5 earth exit trial. Try and join high-level level parties (even as a porter or a scout) and once the high level beasts are killed the mc can take the spirits. Unless if its dependent on who kills the beast. Then mc can steal last shots and take the spirits. Because survivability will be much higher and better rewards outside the trials.