It's more a hard-work map than it is a fun one - simply because of the relentless, almost instant respawning of ALL enemies, usually within one second of killing the last one and almost always before you have had a chance to reload. Even with XPM and 2P, it's still a hard grind, with the map's default weaponry.
The brushwork is fine, or at least perfectly fit for purpose, and everything works properly (there's a long delay on a door which is very annoying) so that's definitely a plus.
For me, it's too much slogging to be enjoyable, however with some rebalancing of weapons and ammo it can actually become quite fun for a small team.
Generally a good effort! Would like to see the next one..