Funny comment. Adv basilisk once saved the day believe it or not. Humans were camping in elevator room: reactor, defense comp and spawns up high. Vent protected by a tesla. Entered as an advance basilisk through vent, no significant damage. Proceded to take out the def comp, spawns and lastly reactor winning the game.
Funny thing is you can take out a reactor near a wall without any damage as a basilisk because of the wallwalk.
Hey, I think your talking about me

The other day, i was playing on a server going on 60 minutes (no time cap i assume), and the humans crowded in the ele room. No tyrant, or anything could really get past that base. 4 turrets/teslas in the front, plus all the bsuits chaingunning+lucy spamming.
After loosing all my evo twice from tyrant+goon, i decided to go into the vent leading to the ele room. There was a lone tesla blocking the way, but luckily it only dropped my health down to 4 in one hit as a dretch. I slowly started "head butting" it, untill i got 1 evo point for a basalisk. After I evolved into a Basalisk, I then started to attack the repeater that was right infront of the vent along with the lone tesla (as they were concentraiting all thier turrets on the hotspot).
After a few hit+run attempts, the repeater finally went down (soon after the tesla). I FINALLY got into thier base. Luckily, thier entire base was tucked into a corner on the floor level, so i coudl evolve into an adv. goon right on top of the elevator room outside the vent.
Even better, thier DC was in plain open view, on the top of the ele room where the small platform is above the door. I sniped it and then shouted to my team that the DC was down, and you could get into thier base through the vent and then evolve. It pretty much went from there

This probibly wouldnt of happend if:
1. If the human team hadn't moved there at S1 (aka they didnt build on the top of ele room).
2. If they built a turret at reapeater instead of tesla
3. If they didnt have the reapeter right infront of the vent
That was definatly one of my best moments on Trem

I'm not sure if thats the situation you were talking about though.