Core Keeper: Two Years In, Is the Solo Grind Worth It? Builds & Base Tips

I've been eyeing Core Keeper for a while now, drawn to that familiar loop of digging, crafting, and slowly illuminating a mysterious underworld. The comparisons to Satisfactory in terms of addictive resource chains resonate, but I'm curious how the RPG elements and combat depth hold up after dozens of hours. For those who've been spelunking since launch: does the progression offer meaningful build choices, or does it feel more like a linear unlock treadmill? I'm torn between diving in solo or wrangling a co-op group—does the grind become oppressive when you're the only one farming ancient ore, or does the solitude enhance the eerie atmosphere?

I'd love to hear about your base-building philosophies too. Any clever layouts that maximize efficiency without sacrificing that cozy underground aesthetic? And for veterans: what's the one early-game goal you wish you'd prioritized? Let's share some hard-earned wisdom.