I've contributed to making a world/walkthrough earning you all achievements really easy. You can check out the walkthrough on the following link. https://www.trueachievements.com/gam.../walkthrough/1
The achievements are grouped per update, although if you are somewhat familiar with the game, just hop into the world and do the achievements without the help of a text guide. Please let me know if you need any help.
This one is easy, just play the game and it will happen. Thankfully this doesn't mean real days, it's in game days, which are bout 15 min for the day cycle and 15 min for night, that's half an hour of real time, so roughly two days of real time to get this and to make this go by faster make a bed and sleep during the night cycle and it cuts your time in half.