I have played the game in full. My recommendations/complaints/critiques:
- Start the game by showing a message and at least quickly after explain the controls and explaining basic mechanics with HP and stamina.
- Make stamina come back over time.
- The stamina bar doesn't always appear.
- Make the level cover the whole screen so you cannot see outside of the map (the black abyss out of bounds area should not be viewable).
- Pressing Page up/Page down seems to zoom in and out of the map and it seems to be a debug feature that normal players should not be able to access.
- The sprite for the toxic waste seems to always have the signs on each side, so the warning signs appear too often.
- The moving platforms clip into parts of the levels.
- Walls in the level sometimes have a pixel or two that etchs out that you can stand on in a way that is most likely unintended.
- Make the boss have more HP/more varied/have better attacks.
- Add in more checkpoints.
- Perhaps add a camera view so we can know that we are not jumping down a hole that goes straight to a death.
- Add a use for money.
- At the end of the fourth level, you can go past the level transporter to go out of bounds and be stuck there until you either quit or go back to the hub.
I also agree with most of Mr. Sneed's critiques.