Just finished my 4th horde night in a row on 10 min 24-cycles and horde night every night with 16 spawning -- man it really makes you think outside the box! I've about given up on molotovs and grenades though, it's a crapshoot wether I hurt myself/set myself on fire lol. I think if you kill demos with AP ammo fast enough their charge doesn't trigger, I used to have them blow up on me but I had prob 5 or 7 per night on this run and none blew up - I shot their charge and it turned red with no blow ups. Not sure what exactly triggers it.
My last-minute electric fence/dart trap setup works perfectly, definitely helps on ammo! God I haven't had this much fun with a game in AGES. Fun pimps = best gaming staff ever, really. Between the game, changes, talking with/listening to the community - grade AAA+++!
@Madmole and whoever else lol, here's some pics right before first horde night. Normally I'd have a top on the base but I was too busy checking everything out to gather resources / experimental and all, but it works well and doesn't consume too much resources. Only nominal repairs/trap replacements needed (only the iron spikes, just minor repairs on electric fences and trigger plates) -- no breaches so far

but, my resources are running low. starting to hit nearby mines for 3 mins just to get a whack in between hordes. Will I die on the 7th horde night? hehe.
I tried attaching them here but it messed up after the first one. Not sure why it remained attached to the post. More in the spoiler tag to save space.