I recently made an adaptation of the map dust_b4.bsp (by Toast) for Quake2. The original map de_dust2 was made by David Johnston for Counter Strike. Now I already know that there is also a map q2dust2 by Unh0ly )) However, it is worth noting that its map is quite large, with a large number of items and different gameplay. In any case, I suggest testing my version of dust2 (d2.bsp).