Pop ups:

• Flag- Half raised will increase your health meter partly, fully raised will heal you 100%
• Treasure Chests-go after them, they get you 75+ worth of treasure points
• Coins- Some don't give much, but they can be quite handy.
• Crates- Grab them as soon as you can- unless you only have like a few squares left

The Dudes:

• Cannon- slow, but still avoid them
• Myncis- are okay to deal with in the lower rounds, but then they get annoying in level 2
• Techo- These guys seem to have a mind of their own! They follow you most the time and are much faster than the other pirates, watch out when you get two at once!
• Sword- This helps you a lot! When you're in a situation where you're cornered (with something like techos or if you have a low health meter for example), follow it around for a bit... or you can just take your chances and run through the guys.

Levels:

Round 1:

• These don't really matter because you can back step without messing up a block, so just go through these as fast as you can to get the time bonus,

Round 2:

• Level 1: go in a spiral around the pool in the center, try not to back step
• Level 2: go around the two outer rows (go in a spiral) when you get to the bottom right of the inner part (diagonal of the water), mover left, left, up, up, and just follow the cross until you end up where you came in it, then just follow the cleared path to finish
• Level 3: The Easiest!(as long as a guy or crate doesn't mess you up) here's the exact directions to not have to back step:
• up(to the end of that row) left, left, down(6 times) right, down, left, left, up (3 times), left, down (3 times), left, up (6 times), right, right, up, left, (all the way to the end of the row) down (6 times) right, down, left
• Level 4: is just weird... that one you have to back step, but when you do... most likely in many situations, the best way to still get spaces swabbed is by a two steps forward, one step back kinda situation, there's many things you can do here- it just gets confusing from there...

That goes for the same in the other levels, try your own techniques and see how far you can go! :)