Ctrl is supposed to be the dash so it's weird. And I'm french so the game controls are based on an azerty keyboard, maybe this explain the W for up being a bad combination. I'm working on the rebind system but it's gonna take a while though!
And about the game closing while making upwards jumps, this is really strange... Are you talking about dashes? And could you tell me on what search engine you played (or on what operating system if you downloaded the game)?
Thanks for the feedback!