Seeing Arya burried into the ground like the warrior woman before, Aswin calls out "They need help, but the gap is too small for me. GO! I'll open the way and hold the lot of them back." With that, he lashed out at the zombies blocking the way to his helpless companions with furious strength, swinging the large hammer with a strength able to crumble stone.

Spoiler
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Opportunity on Z6. Z5 if Z6 down from AoOs
(1d20+9)[28] (2d6+12)[19]

Drifa
attack Z9 - (1d20+15)[24] (1d8+12)[16] trip - (1d20+12)[16]
attack Z5 - (1d20+15)[31] (1d8+12)[20] trip - (1d20+12)[21]

Aswin
attack Z6 until down. Then Z5 until down(-2 AC from cowering). Then w until down
(1d20+9)[14] (2d6+12)[14]
(1d20+9)[26] (2d6+12)[20]
(1d20+3)[20] (2d6+12)[21]