Other games have them, wouldn't it be cool if Cubic Castles had them as well? You would access your list of completed/uncompleted achievements from a button in the menu, and you would get a small reward for completing each one (small sums of cubits, blocks, etc.) If you completed all of the achievements, you would get a prize! My idea is a safari outfit for exploring all the functions of the game! (safari hat, khaki vest, and khaki pants)
I have created a list of achievement ideas:
Chef: Cook your first item using a stove
Top Chef: Cook 1 of every standard food item
Farmer: Earn 10,000 recubes total
Professional Farmer: Earn 100,000 recubes total
Social Butterfly: Add 50 friends
Apprentice: Reach level 20
Journeyman: Reach level 40
Master: Reach level 60
Real Estate: Own 3 Realms
Digger: Mine 10,000 blocks
Miner: Mine 20,000 blocks
Dwarf: Mine 100,000 blocks
Builder: Place 10,000 blocks
Artisan: Place 20,000 blocks
Architect: Place 100,000 blocks
Carpenter: Craft 5,000 items using Tree Trunks (any kind)
Stonemason: Craft 5,000 items using Stone Ore/Blocks
Handyman: Craft one of every tool
Fashion Mogul: Carry 55 Hats with you at one time
Fashion Model: Wear a clothing item in all 9 slots
Squire: Slay 200 qbees with a wand
Warrior: Slay 1,000 qbees with a wand
Spammer: Fizzle a wand
Archaeologist: Mine a piece of Cave Art or Fossil from a natural source
Pet Owner: Obtain your very first pet and tell them to follow you!
Proud Pet Owner: Own 5 different pets and have them all follow you at least once
As you can see, this wouldn't really be "alternate account cheatable" because a lot of the achievements are more end-game, or require a lot of time to complete. It would take a while to finish everything and get the final prize! This would be something for us high-level old players to do, as we have already completed all the normal quests and the game can get a bit boring at times.
There might be some people heavily against this, and that's perfectly fine! You're entitled to your own opinion ^^ Remember, this is just a suggestion, it's actually rather likely that this will never be a thing. But it's something to think about.
If you have additional achievement suggestions, tell me and I will add them if they're good!