This new update introduces Golden cards, shop discounts, and some changes to the core systems.
Here are the patch notes for version 0.1.0 of the demo:

Golden Cards

• New Golden cards have been added to the shop!
• You might rarely find Golden cards in the shop during your runs. Every card has a Golden variant, which has a significantly stronger ability!

Shop Discounts

• You might find discounted cards in the shop.
• Discounted cards only cost 1 gold instead of the usual 2.

New Content

• Added 3 new minions, 4 new runes, and 1 new item.
• Removed the Scared minion. It has been replaced with the new Scared rune.

System Changes

• Coins are now carried over between rounds. Any unspent coins will be kept, and can be spent in the next shop.
• The minimum deck size has been changed from 12 → 14. If you have less than 14 cards, the remaining slots will be filled with Poop.
• After playing a hand, the remaining cards in your hand will be discarded instead of kept. You will draw a fresh hand of 7 cards at the start of every turn.

Balance Changes

• Enemy health has been increased at later rounds
• Kissing: Ability changed from giving +1/+1, +2/+2, +3/+3 → +1/+1, +3/+3, +5/+5
• Dog: Ability changed from giving +2/4/6 attack → +2/5/8 attack
• Joy: Ability changed from giving +2/4/8 attack → +2/5/8 attack
• Heart Eyes: Ability changed from giving +2/4/8 health → +2/5/8 health
• Juggler: Ability changed from giving +2/+2, +3/+3, +4/+4 → +1/+1, +3/+3, +5/+5
• Snowman: Changed from tier 3 → 2
• Snowman: Base stats changed from 1/10 → 1/7
• Horse Rider: Summoned Horse stats changed from 7/7, 14/14, 21/21 → 10/10, 20/20, 30/30
• Shark: Ability changed from gaining summoned stats+0/1/2 → 50/100/150% of the summoned stats

Infinite Combo Resolution

• A resolution for infinite combos has been implemented. It works as follows:
• After the enemy attacks, if the target ally’s health either stays the same or increases, then the enemy gains +1 attack. This attack bonus resets once the ally is destroyed.

Other

• The Deck List and Discard Pile UI’s have been improved. They should no longer lag when your deck contains many cards. They also now update in real-time during combat as you draw or discard cards.
• The Deck List and Discard Pile UI’s now have smoother scrolling when scrolling with your mouse wheel.
• End of battle popup animation speed now scales based on your current selected time scale
• Various battle animations have been sped up
• Fixed a bug where excess gold amount was not saved properly when exiting and continuing a run

If you have any feedback or suggestions, feel free to post them in the Discord, or on the Steam forums.