I went up, funny little platformer, really like the black and white art style and the contrast of the red lava, the level design is fun and not repetitive, I like it.
The jumps are a little hard to calculate but I guess that adds to the difficulty, the only thing I felt it was missing was some music and sound effects to go with it.
I also think that you can add dept with some power ups like double jump, big jumps or slow/fast lava speed, hope the feedback helps you.
Overall really good for a first game, keep the good work!
Also it runs perfectly on the itchio desktop app.