Thanks for your comment. Yeah we would have loved to add a tutorial or even just some tooltips but the time was not on our side.
For that "roll 3 choose 2" mechanic we actually had a lot more ideas. One we wished to implement is to have the enemy use your leftover "3rd roll" for his attack turn and you having the option to use one of the enemies. This would have opened up the mechanic to have "debuff" type faces on your dice, like take X damage. So you could have a risky build where if you could mix those "dmg to self" faces with normal attacks for more damage (ie you roll 2 swords, 2 swords, 1 dmg to self, you'd choose to use both the swords and leave the dmg to self to the enemy so you'd do a total of 5 dmg), all while having the risk of rolling and being forced to pick those dmg to self rolls (2 swords, 1 dmg self, 1 dmg self you are FORCED to pick two so you'd do at best 3 dmg to enemy and take 1 dmg).
That was just an idea though, I hope I described it well enough.