Yeah, the browser version takes my mouse input but not my keyboard.
I downloaded it though and its a ton of fun! Simple but lots of polish. The sounds are good, the camera shake is noticeable but pretty unintrusive. Theres a lot of game juice.
Design wise, I think the player moves too fast. It seems fitting for a temporary upgrade that might spawn but on it's own the player is almost invincible if they play smart. Also, the physics feel just a tad bit slippery. That's pretty nitpicky though, otherwise this game is absolutely fantastic.