So i was playing endless, on the map with the ramp and the tower in the middle, and a sword robot mark 2 went under the ramp, and killed me through it as i was above, reflecting arrows. Pictures here: http://prntscr.com/d57aej

the sword passing through the floor is the sword of the robot that killed me

Good find! I'll append your screenshot to the bug report on file. Thanks for the report!

-Cheers