These tricks are sooooooooooooo old!Further more there are only 8(or so) units of all Beta units!
(Download the files "Map tricks" and "New units and objects template,then you get all AOK-Beta units)
And the water walk trick is easy to explain(and old,too):
1.make a bridge in the editor!
2.delete the bridge with trigger!
So this is not worth to download!