This is a very solid first entry. It's got some rough edges, but you've got a lot of fundamentals implemented in here. The next step is to polish them up. In terms of the project, I thought it was super ambitious. I was surprised you had one boss, let alone three. The map was deceptively large and looped back on itself in interesting / unexpected ways (the secret passage after the 2nd boss stood out in this regard). The jump movement was predictable and easy to control for the most part, and there was a good amount of feedback and SFX so that I usually knew what was going on in a combat encounter.  The special effects on the third boss were the standout for me.

Some other feedback:

- As has been stated, the movement is pretty slow. Backtracking took a long time, and missing the double jump in the second boss's room was particularly painful. I also think the amount of distance you gain from dashing before the jump is not obvious at all, nor is the speed boost itself. 

- I got locked into the shield position while facing away from one of those projectile shooters and took like 2 1/2 hearts worth of damage before fixing my positioning. It wasn't super intuitive how to drop the shield and turn around.

- I'm sure it's been said before, but some explanation text as you get new abilities or in-game control guide would be super useful. I stubbornly smashed on my keyboard until I had all the controls figured out (I didn't see the controls on the web page until after I had finished the game).

Overall though a very impressive start. You've got blocking, double jump, wall jump, these are all not easy to pull off. They're not perfect yet, but now that yuo've done them you can start refining them. Very nicely done, keep it up!

EDIT: Oh, I remembered another thing. Pleeease give a skip option on the opening text crawl if it's going to be that long. I got stuck at some point and had to restart the game and, oof... At the very end I found out holding the attack button sped up the text, but a "Hold X to Skip" or something is always appreciated.

Very nice game! I like the story setup & the Player character has a cool look & personality. The look & feel kind of reminds me of Kid Chameleon. The music & SFX are well done & add a lot of life to the game. The game feel & balance could use some tweaking. The Player movement felt too slow & bosses were easy to cheese. The bosses are a great addition, but I became soft-locked somehow at the demon boss. Good game overall!

The bosses are cool! I like that you got each to attack in different patterns. The music is cool and varied, and goes well with the graphics style. I also liked that when I got skills, the game also returned me to where I needed to use them, I think this is good level design.

The combat was simple and felt on point, a lot with the classic theme.

Even with the retro style, it was very easy to know where I was in the map, and the map was short enough that the walk felt "cinematic" rather than annoying. I liked this game.

Wow, this is awesome for your first game. Congratulations! My first games were not even close to that lol

Although it is true the movement is too slow, specially when backtracking if you are a bit lost, the music helped there a lot. I love the main track (or the initial one, not sure if it is the main but my favourite by far), so it felt fine just going back and exploring slowly while listening the awesome track. Still an issue, but great job with the music. The SFX for the charge attack felt really clever from your side, but I understand that it is easy to miss. Art also goes super well with the theme and the music, congratulations on that. 

The level design is rather clever to follow your vision of now showing any information to the player. However, a tiny bit more of information might still fit into your vision and make everyhting easier for players. Maybe show a little diamond when you get the upgrades, health bar for the bosses or better feedback that you are actually progressing through the fight and not doing something wrong. Reading the previous comments, I realised that I actually got a bug and the objects where not turning red if they are destroyable when the player charges the attack; that would have actually helped a lot and being a nice surprise. Sadly I missed it, but figured out it anyhow. 

I got stump a couple of times, for example outside the bird boss, but overall really good entry :) Congratulations again!

This is great! Very strong start for a new developer.
I got stumped a couple times, and had to restart after dying and getting stuck outside the bird fight, but I did end up finishing the game.
It could do with a littlle bit of tuning to make it a bit nicer to play - faster move speed, less health on the bosses, less precise jumps in the section at the end, etc - but tuning issues are to be expected in game jams.
all in all, good job!

Congratulations on your first game, really good job! This is definitely a strong starting point, and I hope you just continue to join jams and improve your craft. This was a delightful short game, I had a good time with it, and I found it very impressive that you even included full and fair bosses in your first project. I do wish the bosses had less HP and the player moved faster though. The pacing for a lot of the game feels too slow with the movement and bosses having too much hp despite their movesets not changing too drastically. But that's just balancing, and getting a feel for that is all about making more games and getting all types of feedback to your games

Very good entry!

For your first ever game you should be unbelievably proud! My first games were nothing like this!

The changing music between areas is nice, the colour theme as a way to play with the 'classic' pallete while keeping it limited was a really great and creative choice! The movement felt a bit slow and frustrating (Especially while backtracking). 

The use of 'down' platforms to have the player discover what the blue power did without instructions was excellent level design (Though the blue power doesn't totally protect me and I got hit quite a few times while using it)

The room transitions could be jarring if you didn't quite make a jump, you'd quickly go into one room and fall back into the first.

The enemies (and myself) aren't super obvious when they take damage. The red boss in particular I was hitting for a loooong time before I realised it had a crit spot.

I got the red green and blue powers but couldn't find where to go from there (I found a shortcut left of the red power, so I assumed that red crate was supposed to be destructible?)

I managed to somehow knockback this enemy through a wall?

It seems is a very slow game, i though it was a bug.  But after some time playing the feeling becomes better and it's less annoying.

Congrats on submitting your first jam game. You should feel proud of yourself.

I really like the idea behind this game, but I do have some questions regarding gameplay. How much more is there after the locked door on the right, after the spaced jumps? I explored everywhere that I could except I couldn't get past that door. I assume I can after fighting the first boss, but there are other issues that prevent me from getting back to that door such as the wall enemies rapidly firing projectiles. Also, the player moves reaaally slow. Was there a point behind that? Like later on in the game, does the player get speed powerups? The game mentions a dash, but it either doesn't work, or its a powerup I never reached.

EDIT:
Just to double check myself, I played the game again with the same issues, but I noticed that you get the ability to block projectiles if you press down, which helps navigate the rapid fire wall enemies, but the route with the spikes still prevented me from progressing. Also, as a general rule, if you acquire a powerup, you want to make sure your player knows they did. I knew I beat a boss and I knew I picked something up, but my hearts refilled and I just made the assumption that it was just a full health replenish.

Viewport sizing was a little weird to me as well. Fullscreen felt too zoomed in, but outside of fullscreen mode, your UI moves to an odd position.

Music and art meshed well together, which can be hard to get right sometimes, so good job there.

I know this sounds like a lot of nit picky stuff, but I like to bring up these kinds of issues, questions, and help you generate insight into your own progress as a developer. People did this for me during my first mvm and I improved vastly. I even come back to previous feedback to see if I'm repeating something that people didn't like in general.

Overall, its not a bad first jam game. If you can provide a little more information, I'll try to come back and progress further than last time. Other than that, congrats on submitting.! You have a lot of room to grow and you should be excited by that. Keep entering this jam, there's quite a few of us who participate regularly and its great to see how we all grow!

I played it, and enjoyed for a bit. The movement and control feel was a little slow and unforgiving. May come back to this later and try to get further through it! Great Job! Will come back to this