Help with a few things.

[Chengi]

I'm a little new to level editing in 2.0, and I have a few questions, I'm making some 2D levels, and would like to know what numeral directions are PERFECTLY north, east, south, and west. I don't want the character to go out of a straight line. As for my second question, how do I make a simple Egg Capsule? I was pretty used to "Finish level on death". My final question, would it be possible to make a level where you have to collect a certain amount of rings to pass? (Not like a special stage with a counter and everything.) Any help would be great, thanks.

 

[Eblo]

what numeral directions are PERFECTLY north, east, south, and west. I don't want the character to go out of a straight line.

What do you mean? Be more specific.

As for my second question, how do I make a simple Egg Capsule? I was pretty used to "Finish level on death".

Try the tutorial on the Wiki, but remember to use the newer iterations of the linedef/sector/thing types.

My final question, would it be possible to make a level where you have to collect a certain amount of rings to pass? (Not like a special stage with a counter and everything.)

Try linedef type 304. You could use it to open a door that closes off an exit.

 

[Mystic]

If you're talking about the angle field, SRB2 uses trigonometric angle numbering, so 0 is east, 90 is north, 180 is west, and 270 is south.