Just some questions.

[Ninja c:]

Ah thanks for the help, I saw this elixer in the store. Do you know what is exactly does?

Welcome back!

The shadow essence makes it so the mini bosses spawn in certain places on certain maps.

As to your question about fastest xp, I've tried levelling in both starship and overlord. Some people may disagree but from my experiences, overlord was faster. Not only does it give the fastest and most xp, but there's more of a chance of dropping elites and also more people running the map.

If you need any help I'd be more than happy to lend a hand (if I have a combo, of course!) IGN Screwpl/Trashpl/Stompor