- Estimated achievement difficulty: 6/10 [highly skill dependent] [Achievement Difficulty Rating]
- Offline: 10 
- Online: 0
- Approximate amount of time to 1000: 3-5+ hours [highly skill dependent] [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1
- Missable achievements: None [level select]
- Does difficulty affect achievements: No difficulty option
- Unobtainable/glitched achievements: None
- Extra equipment needed: None
Welcome to 140, a minimalistic rhythm-based platformer. This is a game that you are absolutely going to want to play with the volume on if you want to be successful, as the obstacles in this game move to the beat of the song playing, and you'll be timing your movements and jumps off of that beat. The game is really short, with only three levels, but as with all platformers, some skill and practice will be required for the completion. Let's get started.
Step 1: Normal Levels and Miscellaneous Achievements:
This game is really short, consisting of only three levels. Jump right into the first one and get used to the platforming and the rhythm in the background, since the music becomes more and more important as you progress. Checkpoints are in abundance, so with a little effort you should be able to make your way through all three levels. On the first level, to avoid the need to replay it, when you get to the boss you should aim to defeat him without jumping for an achievement. There is a checkpoint right before him, and he only takes a minute or so to defeat. Refer to the relevant achievement solution for more information.
The second and third levels will definitely see you dying quite a bit. Each boss needs to be defeated without dying for individual achievements, and those must be obtained on these normal levels, not the mirrored levels. It's highly unlikely you'll do them both without dying first try, but read up on the relevant achievement solutions for tips and to prepare yourself as much as possible. If you die on them, you'll have to play through the level again from the start to get to the boss and try again. Just know that each time you have to play through these two levels again to attempt the bosses is needed practice for the next step.
Once you've completed all three levels, beat the first boss without jumping, and beat the second and third bosses without dying, you're ready to move on to the next and final step.
Step 2: Mirrored Levels:
All that's left at this point is to complete the mirrored version of all three levels (located to the right past the hub area). The mirrored levels are simply mirrored such that you're moving left instead of right. There is no change to the platforming, puzzles, timings, etc. However, the biggest difference is that there are no checkpoints. This means you essentially need to complete each level individually without dying. This may seem daunting at first, especially if you died a lot during the first step, but as with all platformers, practice and patience is key. Refer to the guide for more tips. Once you get through all three mirrored levels, you'll be done with this completion.
If you're missing anything such as the three miscellaneous boss achievements, or if you somehow didn't die 63 times yet, now is the time to mop up those achievements. Refer to the individual achievement solutions for tips and strategies.
140 is a simple yet enjoyable platformer. It offers a short but decent challenge, one that is fair and not overwhelming. The difficulty of this game will depend heavily on your skill, patience, and especially your sense of rhythm, but with enough practice this game is definitely not out of reach for a casual gamer.
[XBA would like to thank Necrophage33 for this Roadmap]