Tommi has no clear shot at any of the enemy, who are caught in the bottleneck. He shifts his position, and tries to get a clear shot at the Shaman. The shaman's eyes are too focused, so he looks to the War leader instead: he's looking elsewhere. If Tommi thinks he has a shot, he takes it.
OOC: Move: to X34.
Attack: Against the war leader at X30 since he's adjacent to Vairar (so SA will apply). He's firing past Vairar, and so I am guessing that counts as 1/2 cover (+2 AC; maybe more?). Won't send in Oh-Six to the cluster for advantage.
1d20+7=16. Likely a miss.
You have stats for enemies in DMs post
War Leader Noryeghu AC16 HP 58/90 PP14* so 16 is a hit (if there are no modifiers)