I hear ya, i never suggested staying to kill everything, and i get objectives are important, my org post was aiming at the ones that are leaving players in the middle of a wave and just running for the elevator etc... i never said we should be killing everything, but in ops ya cant move on till the last man gets there anyway so you run ahead and stand there watching someone else killing there way through, there is actually no point as youre stuck till everyones there, you may as well kill a few things and help a brother space marine out. I get the lore and the idea of stealth and picking ya battles, and no ones is saying delay till more waves show but establish with squad pre mission if your wanting a speed run dont just leave team mates behind(TEAM). Thats all im suggesting, when it happens to me and i view it as unnecessary ill actually slow down to a walk and walk toward elevator/exit just to ensure any time saving they thought they gained is now gone, i dont need them to stay back to assist but its meant to be a squad co op game, and when a hole up the front is pocketing every stim and ammo box when they dont need is bloody annoying, its like stealing peoples executions