Here is the full list of all 16 8-Bit Fiesta achievements.
Finish 10 tournaments
Oh beer god what happened?
Crush the clown
Unlock 3 characters in storymode
You have no fear of death
Drown the dog
Please don't become a pilot
Kill Schwinghammer
Beat story mode lvl 1
Speedrun a gold time
Beat the first boss in no death run
Beat world 2 in no death run
Beat all levels in no death run
Unlock all characters
Beat Jesus in wolly bomb
Kill the dictator