An infinite series of ambushes in a low lit level with excessive colored lighting and doors textured as walls. Very Doom like gameplay and feel. Pretty nice, although very repetitive gameplay. Meh brushwork. Not a great Quake level.

I just kept getting lost & running round in circles all the time :(

So, I take it it's not worth downloading?

I'd say it is worth the download. It's a different map, very DOOMesque and maze like. It will take time to finish.

This map very need minimap as in Doom!

I really want to like xlarve's maps, and feel that there is some sense of improvement as the series continues. But really, this feels very very similar to xl1, xl2 and xl3, with only marginal improvements in the visuals. The gameplay is maybe a bit more varied, but that comes at the expense of a map that is very difficult to navigate, easy to get lost in, and with lots of alternative paths that can easily result in missing whole areas (I finished with only 204 of 220 kills). Disappointing, for me.