An interesting concept, certainly. Playing with WASD was an absolute nightmare for me. Luckily for me the game works with a controller, and using an analog stick was only a partial nightmare to control. However, it feels like the game wasn't really designed around supporting controllers because there's no way to restart after dying without using the keyboard. Conversely, the "Press any button to continue" at the end of the level is really easy to trigger without seeing the message when using WASD. Either way, I just couldn't feel like I could get a handle of the game. It's hard enough to control it at-speed, but so many of the enemies attack on a timer in a way that you need to really time when you approach them, which is pretty much impossible. I didn't get very far because I just wasn't getting anywhere after a while, and I got frustrated when I died after clearing like 80% of the enemies on a level. It's a very neat game; I just couldn't get into it.