|Before the kobalds attack.|
The striped kobald in 3602 attacks Ahmet. He hits AC 4, bouncing off Ahmet's armor - but he misses doing damage.
The kobald in 3302 finishes running up the stairs, where he grabs a sword from one of the bodies.
Here's the position (with additional space that Ahmet can see). There is nothing but wall behind the hut in 3501. The brown at the top of the stairs in 3701 is a large reinforced door.