Oh man, all that time trying to kill Hallowed Mimics on Expert was worth it.
I absolutely OBLITERATED the Destroyer.
Holy Arrows, Daedalus Stormbow. I killed one and still had 3 mins on my 4 min buffs.
I went back to my house, crafted 2 more Mechworms and then killed those 2 with 1 min left on my buffs.
PS. The only damage buff I used was Archer Potion.
I had to farm about 75 Souls of Light before I got the Daedalus Stormbow. But it was so very worth it.
Actually, now I think about it, you could say my character Isaac summoned Atalanta.


Beat Skeletron Prime with relative ease.
The Twins were much more difficult, had to search for Life Fruit, got a Frozen Turtle Shell and Heart Statue set up, was still a fairly close battle but I did it, Plantera's Bulb has now spawned in my Jungle.
Even More Later.
Killed Plantera, easier than The Twins.
Got 2 Solar Eclipses, got a Godly Death Sickle. Plantera was pretty easy with that and Turtle Armour.
Even MOAR later.
Golem. Even on expert mode. Y SO EZ? Death Sickle kept the fists off me, move left and right to dodge eye lasers, run under Golem when he jumps over you. Even easier than Plantera.
So far I rate the bosses in this order, from Hardest to Easiest, using only weapons available before fighting them.
The Twins, Skeletron, Plantera, Skeletron Prime, Golem, Queen Bee, Wall of Flesh, Eye of Cthulhu, Eater of Worlds, The Destroyer. ...Yes I find the Destroyer on Hardmode easier than fighting Eater of Worlds on Easymode.
Only got the tough guys left now. Pumpking, Ice Queen, Duke Fishron and the whole Celestial Event.
I could start the Celestial event now, get the powerful items from the Pillars and use them, or I could defeat the other bosses first, not sure what way I'll do it.