I'm thinking that the Programmer's/Artist's Credit achievements work like they do in Achievement Unlocked where you type their names during gameplay, but I haven't tried it yet. As for the others, I have no idea.
It turns out that I was wrong about that. Also for some reason, I played the game last night and went to play it just now and all my achievements were erased.
artist's and programmer's credit are achieved by using j and k to jump. tapper pro is achieved by doing 10 triple taps. I haven't gotten tapper master yet but I'm guessing it's 50 or 100 triple taps.
I haven't gotten tapper master yet but I'm guessing it's 50 or 100 triple taps.
Trapper master is doing 20 tripple jumps on platforms. But I have noticed that it seems only to work at night on the Magical sparly platform things, almost the only place to do a triple tap.