With some really big added features introduced in the previous update (1.5) we have focused this update on doing some long awaited updates as well as revisiting and evaluating some of the things introduced up until this point.
We have introduced tierable achievements. This means that for each achievement, there is by default only 1 tier with the corresponding behaviour to be completed 1 time. In this way, all current implementations of Achievements works as usual. What you can do now is to add up to 4 additional tiers, each consecutive tier being unlocked when the previous is completed. For each tier you can select how many times the corresponding behaviour is to be performed in order to clear that tier.
For each tier you can set a reward amount and the reward type, this means that Achievement rewards are no longer tied to their corresponding behaviours set effort.