The Young lady from the Myriad Beast sect didn't stop even for a second to consider any tactical engagement or sorts before she ran headfirst into the city gates along with her troops.
Sam didn't activate his trap immediately, because to have a better effect Noah activated her trap first and it is a very common wood elemental energy trap. The vines appeared suddenly from the ground and the troops got caught with the high momentum they had until that point, they couldn't even control their fall.
As they fell forward face-first, they felt like a force ten times greater than the normal gravity is pulling them downwards.
It is the gravitational increment Sam created so that they wouldn't be able to control their fall and to make sure that they fell on the ground and took some time to get out.
Almost all the soldiers that arrived at the gate got into the trap and looking at them, the rear troops halted outside the game.
