Very cool game, you definitely put a lot of thought into it. Here’s what I thought - take it and do with it what you like.
Guis are generally pretty good. The taking the speed, points, and step values out of the leaderboard was a good call - it saved much-needed screen room. I would recommend putting a small close X on the top right of the inventory, etc screens - it was a little bit confusing to figure out how to turn it off, especially when you can open multiple screens at once.
The gameplay is pretty much the same gameplay as all of the other speed simulator games on Roblox, but yours is nicely optimized, so I appreciate that. Personally, I think that the leveling up mechanic doesn’t serve any real purpose, so I would take it out (the leveling gui is nice though ).
The courses are super cool overall. Obstacle run has a confusing layout, but overall you did a really nice job. I like the use of obstacles so that fast players don’t immediately dominate.
What do you mean when you say accessibility?
No tutorial is needed. The game is easy to pick up, and the Roblox playerbase already knows how to play simulators anyways.
Overall the game has a super fun vibe to it. Great job!