Just sharing my POV on how I clear chapter 2 for my guildies.
Chapter 2 changes are that now, the days are 12 days in total instead of 9 and the introduction of lavastone veins which allows the next upgrade for the workbench.
Everything is pretty much the same from chapter 1 for the progress but after getting the golden pickaxe + hammer, you'll need to farm some lavastone veins to get the ore to upgrade the work bench and craft the bow gun. Use the bow gun only on the huge goblin bosses as the durability is very little on the gun.
The rest are the same with just building walls to stall the enemies and cooking food so that you dont starve. If you already crafted the dual bow gun and have plenty of leftover time, you can follow me like in the video and craft strong walls and tower defenses.
Good luck.