Here’s a link to a playable version of my progress so far (click it and go!):
Arrow keys move, spacebar deploys/picks up cat.
It’s still missing quite a lot of content (and quite a lot of gameplay for that matter!), tried my hand at sprite animations for the first time and I think they turned out pretty good.
My IDE is in the browser so it will automatically update as I add new features.
Please check it out and let me know what you think!