Can there be higher tiers for Mystery Box? The highest tier right now is 100, and you can achieve it in about under an hour. It's also a nice sP sink when you get to buy profitable shop items from it!

I think it's time to stop with tiers for achievements that you need to repeat the same thing many times... it's boring and have no meaning, not even challenging.. it's like a free achievement for all.. I'm not a fan of new tiers at all.. 100 time is enough..

I definitely don't think this needs more tiers. You already Major Drills quests which makes you play the box, and that has lots of tiers. The box is boring enough as it is.