Here's some tip that might help you: (1) Whenever the goblin(s) say "_itch" Lucrea will angry and if you switch to use Storm Rune she will unleash big lightning. (2) Penguins are the most helpful. Get them as fast as you can. (3) Fire Sigil, Nova Burst and Mjonir also are useful. (4) Do not hesitate to use Gobu Merchant buff. It quite cheap and very helpful (5) The level before Gobu King is good for grinding your gold. (6) Lucrea has E-Cup and wearing pink panty.
Good graphic, smooth and very easy to understand gameplay. But too linear storyline and no improvement from previous arc are let this game down. Plus the most funny thing is, the car that can withstand any explosion getting stuck by wooden box. 3/5.
LOL #6 - for (1) the lightning is actually true strike (arcane spell lv1) so it's 100% accurate and 100% damage (no RNG)