To get this achievement you will need to open the "Icarus Wings" present and press the x button to flap your wings and fly. You will find random presents while you explore the levels. You can also buy presents from the mailboxes (provided they not mailbox monsters). To find out what a present is simply open it. Another option is to find a wandering man in a carrot suit and pay him 2 bucks to identify any presents you have.