Proper classic style, good length for a quick blast. Plenty of supplies, and not too difficult, but there are a couple of potentially lethal situations where it's easy to get stuck or cornered by the more powerful enemies. Did not find the spawn secret!
Kudos for the deathmatch support, even though I suspect the item placement is quite unbalanced. And the SK room should have had another teleporter back to the exit tele instead of being a dead end.
By the way, if you want to have a no-touch trigger_secret, just give it spawnflags 1 like a regular trigger.
Demo