Levelling Up Strategy Part 2 - Go it alone

Since grinding alone costs in terms of Dil (you have to keep buying health and mana potions), if you want to press on in levelling up alone, you should consider buying health and mana packages from the Dekaron store. Otherwise, you Dil will get depleted, leaving you to beg from strangers in Loa or Braiken Castle. Or from your friends.

If you buy enough pots from the Dekaron store, you should be able to free up your two (standard issue) bags (inventory) from being filled up with pots you'd normally buy from the nearest NPC (Non Playable Character, who are often vendors). This allows you to stash more items you find during your grinding sessions, letting you sell them later. Over time, you get to save up Dil to buy the items you need.

Naturally, you'll be spending cash, not Dil, when you do this. But then you gain the solace you might not get when you party with others. Now all you have to worry about is other people trying to kill you while you go it alone. It's a small world after all.