in the first world with the snow in the beginning of the level to go through the pink barriers u have to kill the enemies but on the 2nd or 3rd barrier ive killed all the people and even the bomb thrower on the other side of the barrier but it will not go down. this barrier is next two another barrier. and the one on the right of the barrier went down when i defeated the enemies jst not the one closest to me, srry if this is confussing but does anyone know
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Only thing I can think of is there may yet be an enemy or two still there that needs smacking around before the barrier will come down.

Here's a bit from a walkthrough i found for that section of Dante's Freezer:

Hope this helps! [/color]