I would like to preface this guide by saying: achievements are for all and this guide aims to help you get them if you're struggling. It shows the easiest ways I found to get the achievements (unfortunately often after getting them the hard way myself). No shame in lowering difficulty or slowing the game down - enjoy it how you like.

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Finally safe?
Finish the game

Self-explanatory. Finish the game on any difficulty.

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Gotta go fast
Reach 70 meters per second

Go fast. Easiest to achieve with multiple gas cloud activations in a row, either on level 19, in the later section with three consecutive gas cloud fields and barriers, or in level 30, right at the end of the level.

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Damn this jellyfish in particular
Kill the same jellyfish 10 times without
hitting another jellyfish or dying

Set your difficulty to normal (or the game speed below x1.5). On hard the jellyfish don't regenerate quickly enough. Find a wide spot with one or more of them (like the start of level 12, but any place should work) and jump onto it to start bouncing.

If it starts to look like you're about to fall to one of the sides, you can dash into it to course-correct in the air without failing the achievement, as long as you land back on the jellyfish.

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Thinker
You spent more than 10 seconds hooked
on an anchor point

Hang onto any anchor point, preferably with some space on both of its sides like the second anchor in level 6. Try to approach it with little to no momentum and get as close as you can. Then just hang there until you get the achievement.

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Gosu
Explode 6 gas clouds in less than 7 seconds

Again best done in levels 19 or 30, as there are seven or more gas clouds in sequence in latter sections of these levels.

Set your difficulty to hardcore (or at least your game speed to 1.5). That way you're the fastest, relative to time passing. In level 19 try to have your cursor positioned up/down when approaching a new cloud group to be able to interact with every cloud in that group (example of a valid attempt below). Similar in level 30.

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Invincible
Finish the last level in difficulty standard
or hardcore without dying

I highly recommend turning off the 'activate checkpoints' setting for the whole game, as it does not disable the selected difficulty. It lets you get used to restarting after a death for speedrun achievements and doesn't make the game that much harder.

That being said, you will need to manually restart the level by going into the main menu each time you die – the game counts you as continuously playing the level if it restarts automatically after dying (it's a good thing when collecting pick-ups, I promise).

Then it's just about being quick enough to outrun the worm and finish the level. On normal mode, you can use your shield and still get the achievement.

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Persistent
Get eater 100 times by the giant
space worm

Simply die 100 times to the worm. Can be done in either level 30 or the endless mode.

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Power Rangers assemble
Have 4 players in the same gas cloud

Self-explanatory. You will need a few controllers tho.

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Speedrun
Beat the high score of both developers
on one of the levels

As the name suggests, you need to beat the listed times of moss and tristesire.

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World record holder
Finish the first level in standard difficulty
in less than 15 seconds

This achievement is difficult, but not impossible. Here are the main strategies I used to beat that time:

1. Use your last dash to slam into the ground
Your first two dashes are for speed, your last dash is to make contact with the ground again and let you continue dashing.

2. Restart by leaving, let the cutscene play out (saves time)
The game counts your time from the moment of your first input or touching the ground.
That means that when you watch the cutscene and the game launches you forward, you should wait until you touch the ground and then immediately start dashing.
When you die and restart, the game makes you click first and only then launches you forward, wasting like 300 ms. (as shown below)
3. Cut corners and soar
You're faster in the air. Jump as soon as you touch platforms, or jump over them. When you reach the last vertical wall, jump off of it diagonally as soon as you touch it.

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Consistent
Beat all the levels in less than 30 minutes

Be patient, learn the game, try as many times as you need.

Remember that you can complete this achievement on any difficulty, so if you're struggling – lower the difficulty setting.

If you're still unable to beat the game, try increasing the number of dashes in settings. It makes the chill difficulty even chiller and should allow you to complete this challenge.

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Not the brightest
You voluntarily picked the + 5 meters bonus
in Endless mode

The + 5 meters bonus is a rare occurence when collecting the pick-ups in endless mode. Fly into every crystal you see and you should eventually get it.

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Marathon runner
Reach 4219.5 meters in endless mode

Self-explanatory. Play safe, don't rush too much, course-correct during jumps and regrab the anchors mid-air for more precise swings.

Try to pick up many of the same upgrade instead of many different ones. Pick worm upgrades that don't change your movement consistency that much (like wind or faster worm). If you are far enough from the worm the fireball upgrade is also great as they spread and fly off screen.

Bothering with pick-ups usually isn't worth it, because most of them work for 20 seconds and are risky to go for (but can restore all your shields if you're lucky.

Here's my personal tierlist for the upgrades I pick up:
(The + 5 m is obviously a joke btw)

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Tourist
Get all the pick-ups from every level
in chill difficulty

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Collector
Get all the pick-ups from all levels
in standard difficulty

Finish the game first. The pickups are invisible until you do (yes, invisible, not unobtainable – what a fun challenge would be to collect them all on a new save ;))).

You need to collect all three at the same time, without leaving the level. My main tip is to turn the checkpoints back on, and rely heavily on the swing anchors for repositioning and retrying, slinging yourself back and forth untill you get the timing right.

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You madlad
Get all the pick-ups from all levels
in hardcore mode

It's the only one I didn't get. It's evil. I don't have any tips or tricks it's just evil.



I'll try to update the guide when a new update releases (like when they changed the 'World record holder' achievement, so it no longer required you to be top 1 on the scoreboard), but I may be unable to find the time for testing again this year.

Please comment with anything I might have missed, or to correct my mistakes.

Good luck ^^