i really like how you've given each bug a title LOL
okay here's a summary of what's going on:
@in the first the body is more of a rectangle in the second the neck gets a curve:
this is not a bug, the models have reduced poly when looked from further, this reduces lag, i may increase this distance.
@The reflection of a waterfall shows up in the water but when you slide in it dissapears:
this is not really a bug, the reflection can only be shown on one layer of water at a time, so i update it according to which one the camera is nearest to.
@All the collision problems:
yes, this IS a bug, and it's a very hard one to fix. Mesh collision is extremely new (you don't see that in IT yea?) and it's a system that i wrote on my own completely, so it's gonna be far from perfect for a good while.
@Bottoms up glitch:
yes, noted and has been fixed in the next coming patch.
@Earpaint glitch:
this should be solved in the current patch 1.03, lemme know if it still shows up.
@Rubber neck:
XD i dunno what to do with this LOL