I like the concept when combined with the upgrade system. It really enhances that risk/reward feeling. I kinda feel like the fire rate upgrade shouldn't exist though. It's basically just a way to throw your life away faster and doesn't really seem to have much upside in the game currently. Also, as someone else noted, it is very easy to get stuck in the wall. I did it twice in a row and then spent the rest of my time playing actively avoiding walls.