I created a two-room tutorial level today, which hopefully talks new players through the basics of using a text parser. It's got its own theme music and sound effects, two new short animations, and an extra achievement for completing it (entitled "Nice to meet you - run for your life!")
I'm half-considering overhauling literally all the dialogue in the game to move it to direct speech, but I'm not sure it's worth it given very low takeup for beta testing etc for the game.
I'm definitely going to add one more feature, aka "invasion mode", and possibly German keyboard support, and then I think I'll do an open release of the whole thing. I don't feel like I can get it considerably improved without feedback and I don't have the energy to add much more content that people aren't going to use, so I may as well just get it released and then go try and work on something else I guess.