A plain slugfest: your character and one creature trade three Strikes a turn until one drops, with no moves, tricks or feats. The exact chance to win first, so you can see which weapon and rune serve you best against it, then real fights rolled to see it happen. The tactics happen in Skirmish.
A statistical slugfest: both sides make three Strikes every turn (the second and third with the multiple attack penalty) until one reaches 0 HP. Left out for now: spells, abilities, what a Strike does besides damage (Grab, Knockdown), persistent damage, movement and dying. Your character is the one on Character plan; edit it there.
Every swing rolled one at a time, at the moment it happens: the d20, the total against the AC, and the damage dice. With "You press Attack" each of your swings waits for you; the creature's come on the timer (0 seconds: at once). A turn stops once its target is down. A finished fight counts in the tally below.
Bars: the share of the fights so far that ended in each round, won and lost. Dots: the exact chance. A few fights are lumpy; thousands sit on the dots.