In theory maybe. In practice not really. Leveling up does not make a huge difference. Leveling up weapons does. Leveling up flasks does too. The amount of time you need to spend to level up is a terrible trade off.

If you’re not good at the game, you can trivialize most encounters with the summons, or use multiplayer which adds a ton of luck to the outcome.

Actually farming runes is almost a trap for anything last stormveil.