Fun game, though I was quite lost early on, just clicking whatever turns green. But I get all of the shorthand now, though I'm still mostly just clicking whatever turns green.
I was getting all the achievements in order until A73 which I am still a bit off.
And the grinding for the 29th Inflaton is annoying. I wonder if it is so hard to get it because of a miscalculation involving achievement A73. Maybe IC2 is meant to be 1.00e100,000...?
I figured it out. I should have read the description. I have to choose three PUs.