Levels 8 and 9 were the hardes for me, as they included a race against the time. Level 8 was FINALLY solved through putting Guppies near furthest pods; Level 9, I grabbed single hill and spread from it counter-clockwise. Yes, sub-optimal, but worked.
BTW: zodiac bosses are Pisces, Taurus, Aquarius, Virgo, Aries, Scorpio, Cancer, Leo and Libra. That leaves Gemini, Saggitarius and Capricorn, which are apparently Nera, Gelyan and Sisily respectively.
1->2 upgrade needs 250 stones, 2->3 is 550, 3->4 is 1210 and 4-> is 2670 stones.
In sum, if iou wanna get phoenix or beelzebub you need 4680 stones of one color.
I`ll bump that: Ranged_Chance max=50%, Block_Chance max=50%, Dodge_Chance max=40%,Critical_Chance max=30%. All this is reached at ~10000 of appropriate characteristic. Blocked_Dmg max=85%, you`ll get it by bying the top shield(13th if i didn`t miscount).
There are 3 secret weapons in the game(maybe there are some others, i just didnt found them)
Level 11, hardmode: Go to the top of the tower, somehow jump to the RIGHT side, then go through the tunnel to the chest. There will be a Frozen Tome in it.
Level 12, hardmode. In the area with Delta Orbs, where you have to create blocks to go through it, go to the top accessible point(don`t forget to kill all those black thingies, they have a block-destroying aura). There will be some distance to one more Orb aura. Go up into it, there will be an island with an elder. He sells Lightning Rod, it costs 3000.
Level 14, hardmode: go to the right end of the level. Then climp up the wall, jump to the floating block, then other... In the end will be an island with an elder, who sells Masamune for 3000. You definetely will need Winged Boots.
Well, already done it while playing Nightmare with Lady Luck and Zodiac Memory. Sisily+(Ladon->Beelzebub) again.
1->2: 250 stones
2->3: 550
3->4: 1210(really that number! Don`t know why)
4->5: 2670(Uhm, that`s strange again.) Not 2700: that time i added stones by ten`s not hundred`s
For those who wants to play as Esis
On the 'world'(map) screen press A+T+L. Type in "longcat"(all small letters!) instead "Answer here". Then click 'next'. There will be a sign "Extra features: On"
You will enter level as Esis.
Her 'breath' is damaging all enemies on the screen at the cost of mana(will work until the manabar becomes empty).
Her common attacks cost a lot of mana(about 25, i think), so upgrade Empathy a lot(Arcane Earrings are also a good idea, but you can be 0-mana-locked).
Try a different browser ;)