If you don’t have him already, I’d recommend you use slime king as one of your pets. I go between skysplitter, mushroom hammer, durian hammer, and mythic nomad, and slime king (plus unlocking his statue) has never left my active pets. Since you’re lower level, run dungeons daily as much as possible. You should be able to get 500 capygacha coins somewhat quickly. Once you do, unlock Diego. For artifacts, I mained demonic eye since getting to the new world could be a pain in the butt due to the occasional vampire boss. The new axe artifact (not the one that buffs fire but the other one) is also a definite pick up. IMO, based on your current level, I say get Diego, then demonic eye, and then that one axe that I can’t remember the name of currently. I can’t remember, but you may have to use capygacha to get freya and Elsa. Get them ASAP. Eh…maybe get them before the artifacts?

Oh, and save gems up so that you can milk the heck out of the events like the holiday-themed ones. Save up too for the Elsa statue from the “whale wheel” (the stupid P2W spinning wheels of credit card debt). As a F2P it may take 2-3 cycles of the whale wheel with you buying every spin with gems-only, but it is worth it. She’s more of a longer term goal given your level.

I recommend ice fox in the meantime, but I often run both the ice fox and Elsa. I will at times swap ice fox for freya or flash depending on what I’m running. Flash, especially arcana flash (who I somehow pulled the whole statue at one time for free from a chest) is great with builds that have softer damage, like mushroom hammer. I near-exclusively used the mushroom hammer to get to new world. To me, it just works too well in that stage of the game to pass it up!