More info and help
ARRRRRRR! achievement is on the channel with the guy holding the stick with a parrot on it.
Just keep trying and eventually the water/wind will stop rising in time to get the treasure chest.
Outfoxed achievement is on the channel with the guy holding a piece of land with a cactus on it and blue blocks passing.
Run over the fox on this channel to get the achievement.
Dragon's Breath is on two channel the guy holding the paintbrush and paints or the guy holding the castle.
The channel with the guy holding the paintbrush, just get a dragon head and it will breath fire.
The channel with the guy holding a castle, build your castle than when you destroy it with as a dragon it will breath fire.