Here is my feedback about your game :
- No AZERTY keyboard support , it was really anoying to play it on such unsual configuration for me
- The game is too punitive, when you die you have to restar from scratch, i died twice after at the plateforms with the toxic see that kill you instantanetly, i got bored and din't wanted to continue
- It miss a save system to remeber what you have done before you die
- Useless collectibles ? I got a diamond but i don't know how does this rewarded me and didn't feel rewarded at all when getting it
- heart placement system not really usefull : I got one when I wasn't needing it, and missed it when I needed it, maybe another heazling systems would have been better
- It miss SFX Feedback
Pros :
- The world seems to have many rooms to offer with interconnections, even if i didn't went far it seems like the level design was solid to offer something interesting to the player
- The movement is fluid and feel responsive ! I like the long jump abiulity, there is good feeling for it
Also even if the moves are slippery, there is enough air time to correct your trajectory when moving on plateform so this was pretty well balanced to not be frustrating and offering enough interesting challenge on plateforming
- No bugs to report it was running really smoothly on my PC
Anyway, pleas take what i saied professionaly and not personaly, I know how hard it is to make a game and finish it so you can be proud of what you have done, congrats !