Yes

PULSE WAVE
Give this character a ranged combat action even if it is adjacent to an opposing character; the area of effect for this attack is half the character’s range value. Draw lines of fire to all other characters within the area of effect, including at least one opposing character; these lines of fire ignore all game effects except for walls, blocking and elevated terrain. Game effects possessed or used by characters with a line of fire drawn to them are ignored until the action has been resolved. If a line of fire is drawn to more than 1 character, this character’s damage value becomes 1 and is locked. Each character hit is dealt damage.

Because the Sniper's Nest trait isn't a wall, blocking, or elevated terrain; it is ignored when you draw the lines of fire for pulse wave.

Ignore me, go with these guys.

I think I was remembering an older wording of Pulse Wave, something like "Lines of Fire are only blocked by", instead of the current "lines of fire ignore all game effects except for".

My bad. Nothing to see here. Pulse Wave is still super-effective.

Pulse wave was effective (pre 2012), then it became a tiny bit less effective (2012), Then it became super-effective (2013).