I know some people struggle with finding Exotics to polish, especially those on mobile, so here's a list of all the achievers:
fubar: Achievers - Big Red
fubar: Achievers - FuNicorn
fubar: Achievers - Diamond Snowflake
fubar: Achievers - Burning Phoenix
fubar: Achievers - Timeless Butterfly
fubar: Achievers - Sea Goddess
fubar: Achievers - BCA Savior
fubar: Achievers - Golden Widow
fubar: Achievers - Golden Skull
fubar: Achievers - Sticky Icky
fubar: Achievers - Living Dead
fubar: Achievers - Cube
fubar: Achievers - Pony