Re: getting goats

Look just because no-one replied to your post doesn't mean you bomb others, The goal is obtained by completing the Trials Of Gnomus (all Five boss fights) and removing the 10 

15-rainbow star cost locks in the last treasure room, you will unlock the hover-goat 3000.

If you just want to be a regular goat, then get a rose to gratify you, or play any zombie mission involving the hypno-flower,