I LOVED the idea for this game, and you implemented it quite nicely, though for me the controls were a little slippery especially around spikes where I feel there could have been a smaller hitbox. I'm not a huge platformer guy so maybe that's just me, but overall a great game.

I thought this was interesting and charming, great job!

My Notes

• The presentation is really fun.
• I find the character animations particularly charming
• Good music and sound.
• I’d love to have controller support for a platformer like this.
• I feel like the spikes could be a bit more forgiving.
• I got caught out my invisible spikes regularly, so showing the dead body was really useful.

Excellent work!  Echoing some other comments:

• Spikes felt too large and I personally think it's good to favor the player anyway, many games like Celeste have smaller hazard collision than the visuals, which also means you often feel like you "just barely made it".
• Being able to drop straight down is important, I suspect just stopping lateral movement when there is no input, or very quickly reducing it to zero, would work.
• Stellar use of corpse, it really takes the sting out of dying
• Super thankful for optional item, I did go back for a few.
• Love the intro, art, music and design, lots of style!

Initially I struggled with the wall jump BUT I realized you can just hold towards the wall and keep jumping, which was super easy and worked well.  Getting a really nice wall jump is probably going to take a lot of time so what you have is pretty good once I figured it out.

Again great job, looking forward to more!

The game did not open in chrome for me. As such I did not rate it. Just putting this here if you want to update it later on

I've got some notes. First the negative:

• The Spikes With a Large Square Hitbox seem to make an appearance. Bit of a pet peeve of mine.
• Not being able to fall straight down, only change direction makes the jump feel floaty.
• Speaking of jumping, like a lot of games I'm required to try to move in the direction of a wall to wall-jump off it, instead of the direction I'm intending to jump in. That one's probably just me.

As for some specific things I liked:

• Good use of the Memento Mori wildcard. The bodies help see deadly spots once you've died there once, acting as a kind of adaptive difficulty.
• Also the head popping off is cute.
• I appreciate the inclusion of a tutorial, checkpoints and optional objectives.
• I finished it despite being terrible at this kind of platformer, so it's clearly doing something right :]

It's fun, the audio is fine to my untrained ears, and the graphics agree with my sensibilities as you might be able to tell from my avatar ;] Good job!

Cool mechanic. I think the jump could be a bit more forgiving, but overall it feels pretty polished and consistent. Good job

Nice use of the "echolocation" mechanic, good idea. As others said the controls need to be worked on a little bit, but otherwise really cool. Well done!

PS: and the 1-bit art was a perfect touch for this type of mechanic, nice thought :D

Nice game, I like the Idea, I personally like these LiDar kind of games and this reminded me of them. I like the graphics and audio and the idea of having like traffic lights as checkpoints. The only issue that I really noticed was that the hitbox of the spikes seemed to be a bit larger than the sprite, which got kind of frustrating. But overall this is well made and definitely a good game for 9 days. 

Had fun with this one. I liked the sonar mechanic, and can see its potential if explored further with new mechanics. The menu was unique as well being tied into the world. As others have mentioned, maybe some extra air friction could allow the player to make more precise platforming. Otherwise, great job!

This one is really cool. Great use of echolocation and the memento mori wildcard. There's a lot of room to expand the gameplay of this in the future. The graphics and audio are really charming. The menu being part of the word is super neat. I'll echo (heh) what others have said about the movement being a little too difficult. Well done!

I liked a lot about this game - the art, the sound, the level design, and the core concept.  I even found the main menu being integrated into the tutorial really cool! As a few others have mentioned though, the controls feel a bit off.  Seconding Quenched Disorder's comment, the movement sensitivity in air was a problem, and there really isn't a way to stop moving forward during a jump since pressing the opposite direction has you instantly going full speed in that direction.  I also would have liked a bit more control over the sonar; the number of times I hit an invisible wall with the sonar revealing a large chunk of wall, but missed the one spike on said wall and couldn't see it, did get frustrating.  I'd love to see this concept further expanded upon though, and what you have is a great entry!

I really liked the scan mechanic, it could be fun to further extend it. Another cool aspect I found is the art and how it was introduced the menu and tutorial, really original.Nonetheless, It took me a while to get used to the movements mechanic... well done!

Excellent graphics and Audio! I love seeing a well polished 1-bit game :D

Nice sonar mechanics and the start menu.
I found some parts inconsistent with jump distances and character control, but otherwise it's really nice!

Like the others already stated, I also find that the controls seem a bit too challenging sometimes. But the game seems quite polished and nice and I like the level designs. Also good job with the title screen / main menu. 

I love the sonar mechanic, it’s really fun to use! The memento mori wildcard was also nicely implemented in a way that served a gameplay purpose. The main menu was well done and the game felt really polished too.

Some feedback on the controls:

1. Air control is too sensitive, it seems like a single tap in the opposite direction changes your horizontal velocity v to -v immediately. That is fine on the ground, but when making precise jumps we sometimes want to keep going in the same direction just less. This could be solved by lowering the acceleration of the character while in the air (or implementing a separate air acceleration).

2. Wall jumping requires too much precision. When jumping between walls, the controls require quite a lot of precision - first you have to keep holding the direction towards the wall you want to jump off, then when you reach it you have to jump and very quickly change direction. The wall jump fails if the player switches direction just before touching the wall, which feels bad. A similar thing to coyote time can be implemented here to not punish the player if they’re slightly too early. Edit: I noticed you already implemented coyote time for the jumping off platforms, so something like that for the wall jumps would be great too.

I think implementing the air control changes from 1 will also help with 2, because it’s less punishing if you switch input directions slightly too early since you’ll keep travelling in the same direction for a bit and still reach the wall.

Nailing the feel of the controls would greatly elevate the game feel. Even though I had the control issues above, I think the game is overall well implemented and very polished!

The Sonar mechanic is awesome, but those controls are tough! That little robo definitely needs some better servos :D

Props to you on the title screen, really cool. I found the character controller needs a lot of tuning though, he moves very far if I just tap the move key and that isn't great for precision platforming.