Humanity

To get the achievement quicker you can filter the search results for new which gives you 80 EXP upon completion with the goldys

7,000 pts are needed for this achievement. Your total can be seen in the favourites tab at the top right.

Expert difficulty stages gives the most xp per stage, however doing easy/normal stages quickly can provide xp faster.

A good method is to find new stages where people have built very basic levels and complete those. Always try to collect the goldys as they give 2x xp