Yeah at the 20 minute mark I had at least 3 traps under every single ladder but go ahead "take a different ladder". Oh you destroyed the traps? How nice, good on you. What now? Go down? Suuuure, the whole hive have been alerted that you are entering underground as trap messages are seen by every xeno but suuuure go. Oh look the are trying to push..too bad they can't as there are 6 million other traps in literally every corner...and yeah that 20 xenos in the dark corridor also doesn't help either....and that is with 1 borrower. We had a round with 3...they pretty much killed more marines than all xenos combined.
"Well let's take elevator than" noooo problem. Ooops, somebody places some clear resin walls directly in front of them...Message:"you see a boiler gas ball flying towards you"....GAS CHAMBER INTENSIFIES
Yeah that map was hell as marine and awesome fun as xeno. Also we had runners alert us anyways about marine movements and place traps on top also to spot them even further. God I loved that map so much.