It's very cute :) There's a lot of player choice, the artwork is nice and of course, it's very halloweeny!
Didn't find any bugs, although there were a few typos around, talking to dad, mum when we're leaving the house, one of the adults says 'you're costumes' instead of your, and one of the children. (It was the mummy, but I'm not sure if the npc costumes swap depending on what the player picks, which would be pretty cool.)
The dog could have done with a face for the menu I think, and it was a bit of an odd choice that you could walk through npcs, though I suppose it stops them from blocking doors.
You did a really nice job spookifying the battle system. Unfortunately it wasn't really engaging for me. I should have probably been a bit more strategic about picking costumes since I just went with my favourite creatures, and ended up feeling really powerless, but I don't like turn based battles so that's not really a fault of the game. Overall, great job!