Glitchy game physics engine surprised me yesterday. I was hunting in the chamber with mountains, smoke and "summoner" creature, and I was passing by the gravestone when suddenly I allmost did The Berakthrough to the Upper Limit being launched by the game physics so high and so fast, that I could see the whole location and empiness around it from above. I was so surprised, that I forgot to take a screenshot.
And of course it's an old glitch, that if you try to jump over Eli and try to enter the airship, there's a big chance that you'll be pushed out and even fly out of the map.