Congrats on getting the demo out. I only looked at the Steam page, not the demo itself, so this is page-only feedback. Three things I noticed, aimed at turning demo players into wishlists:
1. The short description never mentions the free demo, and the Scream Fest note sits well below the fold. Put "Free demo available" near the top.
2. The trailer and early screenshots are very dark and similar (cards on a wooden table). Lead with a readable shot of an item or perk card effect so the hook shows in a thumbnail.
3. The capsule's grey title lettering over a dark eye symbol gets lost at small sizes, and the genre line lists RPG and Strategy, which may confuse horror card fans.
Good luck with the launch.