Verlet Swing

After you've reached 27/28 achievements, just restart the game and on the title screen this will unlock.

This achievement, while daunting, isn't as terrible as it looks. Sure, you'll need to put in a considerable amount of hours to practice every level over and over and get consistent, but it's not a painful process and is extremely rewarding luckily. This game is super fun so it should be no hassle.

After getting all 100 perfect rankings, I went ahead and learned the routing for every one of the 100 levels. Take it world by world, using the individual world challenges both to time yourself and test your ability to consistently do the strats you're comfortable with is helpful. You don't really need to do any risky strats at all, if you're really consistent at the easier routes and you just don't die too much you'll get under 15 minutes in no time. I recommend practicing world 5 a ton, most of the levels aren't nearly as hard as you'd think they'd be once you understand exactly what you're doing for each route and practice. For example, I was daunted a lot by Julbock and Dante's Slide but they ended up being easier when you can (and I know it's ironic) take your time a little bit. Remember, you don't need to do perfect ranking routes, just do a fairly consistent route along each level and even if it's a couple seconds slower than perfect it's not a big deal. You have plenty of time.

When getting to world 5 you want to make sure you have a time no higher than 10:45.XXX. Otherwise, you feasibly do not have enough time. This time is the bare minimum and assumes you'll be nearly perfect on every level. Even if you're above that, I think it's still worth it to finish off the run for practice and a possible confidence boost (right before my successful run I was only 19 seconds off of 15 minutes; so close!).

Level 100 - Sorry isn't as bad as you think it is. The perfect ranking route is much harder and less consistent, when you do the marathon speedrun it's easiest to fling off of the meatball not quite as high, and don't go straight to the grapple. Instead, go for the nearby hot dog (see video below) and THEN swing over to the grapple. The buoys cycle is also way easier with the slight delay that this method brings in. You do NOT want to die at this level, since it's so long, so practice it a bunch. Especially getting used to the buoys and second cave part as these are easy spots to die at.

I recorded my run of 14:37.793 (this was only my fourth attempt at the speedrun, practice really does make perfect). Watch it to see all of the routes I used. They should all be easy to pull off and extremely consistent. There's a lot of points, especially in world 5, where you really should pay attention to see exactly what I'm doing.

Verlet Swing Full Game Marathon Speedrun in 14:37.793 (The Bird's Legacy Achievement) by Mercury

I used this guide to help me with some of the routing but I also used QETC's run as reference for a lot of my run too. BertyBob's WR run also had some routes I liked and used in my video. Basically, I combined what I learned from these two runs into one to create routing which I found easiest for me. But there was also some routing I figured out on my own you won't see in those runs too. I recommend watching both of these runs too to see what you're comfortable with, but my run should probably suffice on its own for showing off the most consistent yet decently speedy routes through each level.

If you have any more questions feel free to comment below on my YouTube video of my run that I linked above or message me on Steam if you have me added.

This achievement is obtained in level 93 - Julbock

Basically, you need to enter the Julbock through its behind. A video guide can be seen here:

Verlet Swing | Event Horizon Achievement by rTeuty

There's different setups you can do; I personally didn't latch onto its head and went straight to swinging under its belly, but this is by no means a very fast route of completing the level, so it will be out of the way if you're going for perfect rankings.

This achievement is obtained in level 90 - The Depths

There's a video guide for it here:

Verlet Swing | Any Eye For an Eye Achievement by rTeuty

Keep in mind you'll need to do this route for the perfect ranking on this level, so if you're going for those, you'll naturally get this achievement along the way.

Getting all perfect rankings isn't as hard as I initially thought it'd be. It only took me ~15 hours to get all of the perfect rankings using video guides on YouTube.

Sometimes, routes will differ and you may find you favor one route over another in the videos I'll be linking. There were definitely times where one video showed a slower, more precise route than the other, which showed a faster route you could easily do within only a few attempts.

Video by AmirGaris:

https://youtu.be/0gLl-a5bwhU

Video by Hobbs:

https://youtu.be/XXLgzYuGZ4E

YouTube user Azurillkirby also has a plethora of speedrun videos, most of which have even better routes than AmirGaris and hobbs, so you may want to search up for his videos too. He doesn't have a run for every level, but most levels he's uploaded a video for.

Good luck! Especially on those last 4 levels. Level 100 took me ~4 hours on its own, though I probably just suck.