And that right there is double the work you need to implement achievements themselves. No matter, I’m not talking programmatical implementation - I’m talking implementation of the idea. That includes brainstorming, design, balancing and the programming part as well. The entire process of implementing achievements gets much, much more complicated if you want to go with a custom solution as opposed to industry standard.
My boss is also Czech. He once said “You’ve got more important stuff to do than that”