For any% just hold left in World 1,2 and 4 and hold right on World 3 for a time of 4:27 . In World 3 you can use the first turtle you see (just jump up the first few platforms) and one in the end (?) to save time. Also jumping up sometimes can also save some frames. Look that up in any WR vid.

For 100% you need to find every present and friend. Some presents and friends have multiple positions in one world, so you can skip a present or friend at some place to get it later on a better spot. For World 1-3 you always need a detour, since you won´t get everything by only going one way. For World 4 everything you need is on the left side.

Important: Whenever you find a friend Barney will make a clapping animation after. You can cancel that animation by pressing a button with a kiss. This kiss animation can be canceled again by changing your direction twice. With that you regain control a lot faster than usually.

World 1:

Go to the right first, and jump up the first 2 hills until you see a present. As soon as you grab the present go left. When you rode the log, jump immediately and get the present+ kid. After that just keep going left, jump up stuff and grab everything you see.

World 2:

Go to the right. you will see a present pretty soon, but you don´t need to grab it now, since you can grab it later without a detour. Get the friend in the way or get it on the way back. Keep on going until you some dirt platforms, that you want to climb up and get the present. When you fall down you want to be moving left asap and get the present. Now as you go left, get up the building right at the start, where you saw the first present and grab it . On top of the building you will also see a balloon that you want to take and keep going left. If you are quick you can get the Kiddo and get an early cicle on the could back and down with the next cloud. Keep going left. As soon as you reach a hill with a balloon, you want to jump up there to get a present on the hill up right of that. You can use the balloon, but you can also jump up there if your position is correct. Now keep going left and collect stuff.

World 3:

First go to the left and jump up the platform and grab the present. If you didn´t get it, you can still get it back in your detour. After you found your 2nd friend, you want to jump up the platform, but not too early, since there is a crab, that you don´t want to interact with. Up there you will see a turtle, you want to take. Get the Present nearby and start going back to the right.

After you reached the start, you want to jump up to get a present high above. You can take the turtle there, I´m not sure if that is faster, but it looks fast. When you see 3 plaforms close up to another, jump up there to reach a very high platform above it and go left, to get a kid and ride the turtle. Now keep going right and get both kids remaining.

World 4:

Start going to the left, there will be a platform with a kid and a present that you want to get of course. Right after that, climb up the big hill, to get another kid up there and take the balloon, grab the present and get back down by using the balloon there. As soon as you land, keep going left (there is a present on the right, but you don´t need it), until you see the 2nd stack of hay, that you climb up and turn around before you use the balloon there (it makes the cloud appear faster), to get one present up a platform there and another present to the right (you will have to wait for the cloud) and go back via the balloon and then keep going left. Jump up the hay stack again and jump on the hill, by pressing the button twice (one time to interact with the frog, but that doesn´t cost any time and one time to jump up the platform). Keep going left and you will find the last friend and finish the run.

Here is a vid of the 100% route: