Here is the full list of all 13 Freaky Awesome trophies - there are 2 silver, 10 gold and 1 platinum.
Freaky Awesome!
Kill the Spider boss without taking any damage
Die in the Viscera location
Complete the "On the Razor's Edge" challenge
Kill the Worm boss in the Secret Lab
Kill the boss in the Organism location
Kill the Wasp boss
Kill the Dog boss
Complete the Viscera location
Upgrade the store 1 time
Kill the Tenheads boss in the Furnace
Go down to the Catacombs
Kill the Brain boss