Some updates on achievements

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