Nice game, like the Fire boy & Water girl games, but with dialogue (or... monologue, technically?) and a backstory.
Now the game itself needs some improvements overall. As been said before, the dialogue box is easy to miss, I completely missed it out on my first go as well. I'd also say clicking through it isn't the most elegant solution... The visual art looks very cool. But the music is really repetitive.
However, the major problem is that the game feels awkward to control, and has some irregularities and inconsistencies. For example, the ghost can fly through walls normally, but for some reason (which I guess is to have us move towards our zombie?) it can't pass through that wall directly ahead at the start of the game? And the fact that we've been told in the text to interact with the key, but we get to simply push it with the ghost instead, without even touching the use button..? Speaking of buttons, the jump button, when held down, keeps bouncing the zombie character! (Boing boing!)
I'll maybe give this one another go later. Cheers!