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Thank you so much for your detailed review and suggestions. I have good news for you. I am just completing the treasure section now including magic weapons, potions, scrolls, etc. It will be available in a few days.

And I've done a conversion of the classic B2 module as well which will also be available very soon. With the modules I can only include the conversion of monsters, NPCs, magic items, etc, not the actual content of the module, much as I'd like to.

Thank you for your kind words.

This game is creative commons so you can use the content or add to it freely.

Ideally if you use the content you'd add this to it:

Some text from CairnHammer by Andrew Cavanagh
CC-BY-SA 4.0
EpicEmpires.org

If you'd like to contribute in some way just drop me a message here and we can have a chat about what might work. There are a few restrictions, not because of me or the creator of Cairn, but because of the company that owns the game that is used for this game's inspiration.

Thank you very much!

Be sure to send me a copy of whatever you make. I'd love to see it!

Thank you for your post Bruno. This is an early playtesting version of CairnHammer. I have a good 70 pages or so to add but you can definitely use what you want to make your own Grimdark hack. The license will be the same as the Cairn rpg. 
Text licensed under CC-BY-SA 4.0
If you could add something along these lines to whatever product you use it in I'd be thrilled:

Some text from CairnHammer by Andrew Cavanagh
CC-BY-SA 4.0
EpicEmpires.org

A Jenga tower usually collapses after about 30-35 pieces are drawn. Here's one way to simulate that.

A d6 dice pool. Every time you use a card you roll 1d6. If you roll a 1 you lose one die from the dice pool. On average it takes 6 rolls of a d6 to get a 1 so to simulate a jenga tower you want a dice pool of 5-6 six sided dice.

Here's a simpler method that only requires one six sided die.

Write down on a sheet of paper the number 5. Roll 1d6 each time you draw a card. If you roll a 1, reduce the number by 1. When you reach 0 it's the same as the jenga tower collapsing.

5 dice will give you 30 rolls on average before you reach 0. 6 dice will give you 36 rolls. You can increase the average number of rolls very easily by increasing the number you start with. Increase by 1 to increase the average number of rolls by 6.

One idea.
Write down the numbers 1-60 on a piece of paper. Starting after the first turn, each turn you cross the lowest number off the list.
Each turn you roll 1d100.  If you roll any of the crossed off numbers that's the same as a tower collapsing.

This gives you a 1% chance of disaster after the first turn going up 10% after 10 turns, 20% after 20 turns, 30% after 30 turns, 40% after 40 turns etc.

Love the flourishes...especially the Flash Bang flourish.

Love Dakkar "Boil the water for Ord's sake". Also love the sickness and the art.

This is super creepy and super cool!

When I saw this I had horrible memories of the psionics rules in the first edition of AD&D (they were disastrously bad). But you avoided that catastrophe by using the core ShadowDark rules. I love the mind blast.

Nice practical design!

Love the map (super cool), undead rats and ghouls. Reminds me of the D&D Basic sessions we played in 1981. Nice work!

Love it! So in theme for Shadowdark.