Reminder: This blog is to help people that don't play well, you can use any strategy. Remember that the debris is a powerful and not very hard to get material but the obsidian can be useful. In every difficulty from ultra hardcore where are 5 layers make -1 layer but the last need to be of debris or obsidian. Another thing to remember is that the enemy have pickaxe and the generators are more important than the armor or sword, the generators can give you supplies and more.