Thank you for this game, it's so cute, and I'm really enjoying it! Quick question, though: Is there a trick to getting the achievements with pebble, or am I just having bad luck?
Also, unrelated, but I've set myself the goal of getting all the achievements and 100%ing the game, as well as collecting 999 of every resource!
You're very welcome and thanks for playing!
For the Pebble achievements, the main trick is to avoid overhealing early on. Try to make sure you've used more stamina than the restore cell heal amount so you can maximize your Fortify stacks. It also helps to stock up on Mageflare Runes and use them every 6 to 7 digs in the Granite and Magma layers so you don't miss any restore cells.
The rest really comes down to luck. Pebble has no footwear, and since you're using the Violetheart Pendant you're basically giving up the accessory slot as well. Good luck!
And I'm really glad you're enjoying the game so much. Love that goal! I hope you manage to reach 100% someday. P.S. Getting 999 Diamonds might take a while.