Aerowalk

Aerowalk is one of the most popular unofficial maps in Xonotic. There are many variants and ports of the map. Primarily played in Duel (1v1), the most popular revision is hub3aeroq3a_nex_r4.bsp.

Tactics
Being a small map, each sound of a pick up is characteristic to a position on the map. Additionally the narrow corridors and corners make it challenging to strictly avoid an opponent with only movement speed.

Spawn Fragging
Exacerbated by Devatator's guided rockets and Mortar's ricochet, Aerowalk is notorious for unsafe spawn points to the extent the recently fragged will be killed on spawn with prediction and  proper timing. A revision of the map, hub3aeroq3a_nex_r5.bsp, intended to remove spawn fragging remained less popular.

"Red Armor" Jump
Named after the location of the Red Armor in Quake, it describes a jump to the Mega Armor without the use of weapons.

Commonly across Quake-engine games, the jump is performed starting from the pair of health, considered easier, or from the weapon next to the top of the stairs. In Xonotic, the easiest method is forward jumping from the top of the stairs adjacent to the barred window.