Took me 10 runs to finish the level using speed alone. Here's some general feedback:
- It would probably me more engaging to have coins and keys not respawn (as well as keeping unlocked doors open) so that we could continue to explore different parts of the maze. Otherwise, once you learn which places are best to gather coins, you can quickly max out all the upgrades.
- Something to do with the way that the player's position is tracked allows us to enter walls and get stuck inside them.
- You can keep spending coins to upgrade even after maxing out the research.
- Shields create a collision mask that prevents you from touching things, instead of protecting you from damage. It makes it so that, if you want to place a bomb, you'll have to place it from further away than you normally would be able to, which can lead to frustrating issues.
- Speaking of bombs, a timer on top of bombs placed would be welcome.
- Other people have mentioned and I'll reiterate: since the camera doesn't keep the player centralized, the faster you go, the harder it is to see where you are going, which makes it a relatively frustrating, yet necessary, upgrade.
Congratulations on your attempt and submission!