I'm so glad to finally play this demo! Been looking forward to it for years! Had a blast, so feedback time I suppose!
* I got stuck in the house because I could hardly see the outline of the door; may I suggest an up arrow icon whenever Mel stands by a door she can go in/out?
* Clunky ladder/jump physics are...actually super welcome. I'm glad that Mel feels like a heavy android and moves somewhat slowly.
*I definitely feel like there should be a checkpoint between getting the gun (which requires some puzzle solving) and a puzzle involving spikes and buzzsaws? It felt like there was a long stretch between checkpoints, and no one likes to re-solve long puzzles!
* I did enjoy the tricky puzzles though!
* Missing a jump from the top of the silos is a clever (if unintentional) way of implementing a death pit without actually having a death pit (because you take fall damage, get shot and immediately blown up by a grup), and I just want to respect that.
* For the boss, it feels like Mel's crouching shot SHOULD go underneath the boss (to help kill the crawlers), but it doesn't, so there can be a crawler hiding behind the boss sprite. Just an annoyance, really.
Overall, solid demo! Can't wait to see more!