Today I ran the Demo. The dwarf's double (triple if crit') attack is really to powerful to me and the players, compared for example to the Roadwarden's Execution shot (melee+shot = kinda double attack with recharge rate 3).
To balance that, we houseruled double "strike" (maybe that's not the name, I forgot it now, ****) action card has a recharge of 3 instead of 0.