There's a way to glitch into the second green area without crouching: if you run into the cannon and die, you have a temporary shield for a second which you can use to get past one of the bullets. So now I'm stuck down there and can't get back up.
After playing Holyday on Steam for 7 mth and town level 25+, I see the achievements and I'm like: YEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
 "DJManiax"){kind=icon}
 "Antimatter Dimensions"){kind=icon}
 "Sydney Shark"){kind=icon}
 "Generic Incremental"){kind=icon}
 "Merry Christmas"){kind=icon}
 "- Music in Motion -"){kind=icon}
 "TomTom"){kind=icon}
 "K.O.L.M."){kind=icon}
 "This is the Only Level 3"){kind=icon}
 "Holyday City Reloaded"){kind=icon}
 "The I of It"){kind=icon}
 "NGU IDLE"){kind=icon}
 "Aisleen"){kind=icon}
 "It's Just TIC TAC TWO"){kind=icon}
 "Sprout"){kind=icon}
 "Mechanical Commando"){kind=icon}