Hopefully this is concise enough.
Rules for solo combat:
First understand that there are three stacks of cards. A) Monster Damage Stack. B) Combat Stack. C) Hero Damage Stack.
Also flip over the chosen monster token so that you know how many hit points they have. Shuffle the combat cards every time a new monster is fought.
Step 1 - Add cards from the Combat Card Deck to the hero's hand to get to 5 cards (6 for Krutzbeck). Power cards are not used for solo combat.
Step 2 - Choose a card from the hero's hand of cards to play against the monster.
Step 3 - Take the top card of the Combat Cards Deck which will be the monsters attack card.
Step 4 - Determine who has the lower value card. Look at the upper right corner of the lower value card. If the icon in the upper right corner matches the card type played by the opponent, then they may counterattack, go to Step 5. If the icon does not match, then they may not counterattack, go to Step 6. Exception: If the card values are tied, then look at the icon in the upper right corner. If one of the icons matches the card type of their opponent, they also may counterattack, continue to Step 5. If neither one matches the opponents card type, they may not counterattack, continue to Step 6.
Step 5 - Play counter attack cards only for the opponent that had the lower value card.
The hero may play cards from those remaining in his hand if the icon in the upper right corner matches the opponents card type (will be the same card type that the hero played initially). You may continue to play cards until the value either matches or exceeds the monster's card value. Once the hero's cards have a higher total value, no more cards may be added.
The monster may draw up to 5 cards from the Combat Card Deck and play any of them if the icon in the upper corner matches the opponents card type (will be the same card type that the monster played initially). The monster will continue to add cards from the 5 just drawn until the value either matches or exceeds the hero's card value. If the value can be exceeded, it will, the monster will not stop on a tie if another card can be played. Once the monster's cards have a higher total value, no more cards will be added, discard unused cards.
Step 6 - The opponent with the higher value card (or cards) is the winner. Take the winner's cards and place them into the opponent's Damage Stack. Take any cards from the Combat Stack that match the card type the winner used that round and add them to the opponent's Damage Stack (there will be no cards after the first round of combat in the Combat Stack). Now take the loser's cards and place them in the Combat Stack.
Step 7 - Compare number of cards in the Monster Damage Stack to his hit points on his token. If the number of cards is equal or greater than the number on the token, the monster is dead, continue to Step 8. Compare the number of cards in the Hero Damage Stack to his remaining hit points. If the number of cards is equal or greater to the number of remaining hit points, the hero is dead, the game is over. If the monster and hero are both still alive, continue to Step 1.
Step 8 - Count the number of cards in the Hero's Damage Stack. Take 1 wound for each card. Take all the Combat Cards and reshuffle the Combat Card Deck to be ready for the next battle.