unachieved 

when you look at ur report card

aww shit lacey i unachieved my goal,a good friend

unachieved by unachieved March 19, 2017

Unchievement 

1) An award or accolade given to someone for being bad at something.
2) An action performed so miserably, you deserve a medal for how bad it is.

After wearing galoshes every day to school, Ed recieved the "Worst Dressed" unchievement in his yearbook.

When Sara messed up her cupcake recipie, her oven exploded. Unchievement.

Unchievement by SKYGONZ October 12, 2011

Unachievable 

something people find impossible to do

"your goal is unachievable"

Unachievable by taybay November 1, 2008