Some updates on achievements — Meta Lines Steam update #26340

I've updated the achievement system. Previously the system didn't count when you clicked on a checkpoint with a full line, I fixed that. Also, I've updated the colors of checkpoints and normal points so that the overall presentation is now more beautiful. Have fun! ːsteamhappyː ːsteamthisːːsteamthisːːsteamthisːːsteamthisːːsteamthisːːsteamthisː