Re: the beating the dragon
Just killed my first dragon on day 15 with a level 9 sword and lv 6 armor, no consumables
Even had gold pass on and ended up with 26k gold :D
The dragon immediately afterwards bent me over though :/
Fun, but the cannon block and piercing block are a little overpowered, especially when combined with the sword upgrades.
I used the exact same configuration of 5 blocks for every level, adding a vision block for ghosts but that's it :/
Hard campaign is fairly easy - started the game fresh, went straight to hard with a turtle deck and beat it in 40 minutes.
Don't use the Recruit/Builder/Wizard cards too often, abuse the hell out of Thief, and don't bother attacking. GL :)