chupacabraVS2: 1. Yes "darker" ones are ones you haven't gotten. As you said 2. The different colored "cups" are just levels. It appears that 20 achievement points and under are "bronze". 25 up to some other limit is "silver" cup, and the higher ones are "gold". (Or whatever the colors actually are) 3. You only achieve an achievement once.
(do skréše) Dež čekáš, až bodeš v něčem na taho, možeš bóchnót na "vechetat" o řádko "oževet" na dóležitym léstko, potem našteloj toďto hodnoto třeba na 30 sekond, abe se tě stav tvéch špilu oževoval rechléc. (Servant) (okázat šecke vechetávke)