There a few differences in the Steam version of this game. For instance, there is a seperate room at the end of the game for you to enter the secret code (the code is different in the Steam version). Also, there are no missable collectables in the Steam version (unlike the old version)

The speedrunning videos listed below are helpful guides for collecting the 4 orbs quickly (since you have to collect them all twice for 100%). They are also helpful for unlocking other achievements that require you to finish the game without dying (YOLO mode) and to finish the game under 10 minutes.

Note that this guide does not go over the 2nd ("Extra Spicy") Campaign and only covers the original campaign.

WORLD MAPS:

http://www.piratehearts.com/blog/wp-content/uploads/2012/05/worldmap1.png

http://aurek-skyclimber.deviantart.com/art/You-Have-to-Win-the-Game-Map-303636860


VIDEOS:

"You Have to Win the Game" zero deaths - any% old World Record (Non-Steam version) by ibldedibble:
https://www.youtube.com/watch?v=2vaAML1FH74
(Current world record is 4:51 by Roiblan - http://www.twitch.tv/roiblanc/c/2386721) < This run uses the Tilde key ~ for the Console Command "kill" to respawn instantly at previous checkpoints.


"You Have to Win the Game" 100% Playthrough (Non-Steam version) by shadowclown169/Flylighter in under 30 minutes:
https://www.youtube.com/watch?v=8kkFWqysmG0

You will need to...

• Collect the four "orbs" in the game (you have to do this twice).

• Traverse the entire map/board. Every square you view in-game counts towards your percentage of completion.
  http://aurek-skyclimber.deviantart.com/art/You-Have-to-Win-the-Game-Map-303636860
  
  
• Collect all of the little money bags and pirate hearts.

When you first start the game, there is
a bag hidden in the tree. However, you
won't be able to get it until you have
collected all four orbs.







This is a sneaky one...





In order to get 100%, you will have to "lose"
the game. Note that this will cause you to
lose all abilities/powers you've gained by
collecting the four orbs. You will have to
collect all four orbs again to win the game
with 100%.

Here is a list of screenshots showing all of the other money bags and pirate hearts for your, um... convenience.
59 Money Bags (3 listed above)
5 Pirate Hearts
Ordered Alphabetically:

Above are two screenshots; the one on the left shows the secret word, and the one on the right shows the secret symbol. But even with both of these clues, the code can be hard to decifer. The secret symbol shows the number "3" with two arrows going in a counter-clockwise direction. The letters given to us are "VXSHU." So... what does this mean?

The Answer:
It's kind of vague, but the "3" with the counter-clockwise arrows means you are supposed to take each letter of the secret word and change it to the letter that is 3 letters before it in the alphabet.
So...

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The Secret Word is...
SUPER








And there you have it! Not only did you "WIN," you have acheived 100%. Congratulations.