Good start, but needs more gameplay and polish.

• The text showing your coins is black, so is the rooms border and obstacles, which means I can't see the text sometimes. Try giving the text a different color or at least a shadow.
• The egg/player collision isn't very accurate, there is some white space collision. Edit the collision to make it a bit more accurate.
• Add enemies to make it challenging.
• Add more graphics and variety. This could be a nice cartoonish game, but the pure black and white room doesn't fit at all. Check out the asset store for some simple graphics you could use.
• Add music and sound effects. Some nice sound effects can also be found in the asset store.
• Make the coins/collectables to be passable. This is because when you collect coins, you collid and stop which makes it feel weird. (Unless this is the behaviour you want, though I don't think it's good)
• You can climb/launch yourself by jumping directly on a wall. This could be a cool feature, but maybe add a cooldown/limited jumps because it feels weird for an egg to be climbing walls very fast.