Balancing: much better
Brutal: I often got (literally) within *1 point* and died :D, until I used Wrenches.
Wrenches: OP
Everything-not-wrenches: (that you can reliably 'choose'; so e.g. getting enough nmineshafts is great, but it requires a lot of luck to get enough): not good enough, no strategies really work; they *can* work but see below (basically: it becomes random luck more than strategy - one bad deal and you die)
Balancing still needed:
- more items in the shop (because you still can't choose your strat - escalating shop costs are just not good for balancing) ...
- ... and more cards (so that the previous item doesnt let players 100% choose their own strategy; your core game-design is 'prevent players choosing a strategy, force them to react to the random roll')
- reduce the cost of deletion: I lose SO MANY brutal rounds because I get 1 unlucky deal in the last level or penultimate level (this is a sign that there are too many cards in my deck, and I'm at the mercy of random deals, and that that is overshadowing my choice of purchases)

