Yes, bars are much more intuitive than numbers, avoid numbers as much as you can.
I've been toying around with the hud:
I started with this sword:

Looks so so,because its too thin.
So I came up with this "capsule" thing.

The power up thingy should be bigger it's difficult to read, but I was just toying around...

You should have decided wich kind of power-up, weapons,etc is your game going to use before doing the HUD, since you said it was going to be rpg like points and lives do not make much sense, experience points should go in the status screen which usually is displayed in a separate menu.