One of the most brutal platformers I've played for this game jam. Learning how to slide bounce on the red targets took several tries on the first level before I got the hang of it, but managing to pull off a combo (even only partially) made the suffering all the more worth it. It feels like there might be some minor issue regarding how the red targets "bounce" the player, but it doesn't impact the overall experience all too much. The same can't be said however with performing the "slide" action while stuck in tight spaces (like the long crawlspace at the start of Level 2), since Bob keeps clinging to the nearest wall instead of allowing a slide to occur (or maybe that's just my inputs, I don't know).
There is however an issue with the player getting stuck underneath areas such as the destroyable brown blocks, spikes, thin platforms, etc. that forces them to wait out the clock (since there's no pause or reset button that can let them skip the wait time), something that become problematic in a game that encourages rapid button combos. I even managed to cause some sort of "thrown error" (didn't take a screenshot of it though) due to button mashing, which froze up the game and forced me to refresh the browser. Thankfully, these issues don't really pop up in a normal playthrough, with the exception of accidentally clipping through solid objects due to trying to force Bob into a tight space.