I'm trying to find the name of a PC game I used to play as a kid in the early/mid-2000s. All I remember from it is that it was a 2D platformer and that one of the levels looked like the following image:
I distinctly remember having to jump over those deadly purple vines. I think you could collect a gun to shoot at enemies. There may have been something like a spider in the level that you had to kill. I also vaguely recall poison/lava tiles on another level? Sorry for the vagueness!