Thanks for playing! Yeah, the boss's cooldown was intentionally longer. But you're not the first to mention the rest of the enemies cooldown, so I might have to adjust that. I've been avoiding jump sfx because generally, jump animations are feedback enough to the player I think. But since this game is more playful, a jump sound wouldn't be a bad idea to at least try out. And there actually is a wall slide sound, but I made it to quiet apparently.
Once I finish up some work, I'll get to your entry! Thanks again for the feedback!