User blog comment:Vorknkx/Easter Egg Hunt/@comment-3547390-20120307204741

Nothing for DOE but there are some for Armagon you forgot. In the mines you could rocket jump to a platform and it would say something about you cheating. Same for HIP3M1 (there is a way to get there without rocket jumping, but it still says you cheated and spawns a few of those spiked things).