ok the red dragon level, aka the level with the yellow glass floor and the green jewel with the sword in the center? well that stage has a deathrap. i was reading an itnerview with boon about deathraps and he just ran of a few (meat grinder, press, beetles) and he ALSO mentioed "getting grinded by gears (i think this is the PSM interview but i could be wrong) ANYWAY. if u look closely (vids help) of the red dragon temple u can notice thatt here r gears beneath the the floor (the yellow see through glass) and that during the fight if u get knocked into the air and hit the ground again that there r cracks in the glass where u land. how much u wanna bet if u get popped-up in the same place twice u fall trhough and hit the gears =D