Fist attack vs Blue, FF, IC: 1d20 + 8 ⇒ (10) + 8 = 18
Bludgeoning? IC: 1d6 + 4 ⇒ (4) + 4 = 8
If the attack hit, apart from the damage, the zombie grabs Blue. If the 18 didn't hit, it will swing again
Fist Attack if the initial didn't hit, MAP, FF, IC: 1d20 + 3 ⇒ (8) + 3 = 11
That definitely doesn't hit!