I'm sorry, but it needs a lot of work.
Good things:
-Most weapons are really cool. The SuperMuramasa was my favorite, as well as the BirbSword. The only thing that I would recommend is better names, but I guess that's just a personal taste.
-This is a neutral thing, I liked the SoulCatcher's sprite, I also liked the Eye of Sun's sprite, however, it has some parts that look like if they were made with paint, but I guess you don't notice it.
Bad things:
-The thing that annoyed me the most was the bosses. For example, the SoulCatcher is exactly the same as Duke Fishron, the only things that change are the sprite, the excessive health and the (also excessive) damage. The same with MechanicalPlant, enraged Plantera but terribly broken, I also don't get what the sprite represents.
I should admit that I'm glad you didn't use the Eye of Cthulhu/The Twins IA for the Eye of Sun, at least it is somehow original using Betsy's IA, but still the same problem as the other bosses.
-The normal monsters sprites make no sense, I mean, the Crawler sprite is just a red square, what does it represent?
-Another problem with the bosses, I mentioned it before, but I have to write it again. The damage is waaay too high, IT'S ANNOYING, SoulCatcher can insta-kill you, even with Post Moonlord equipment, I suggest nerfing all the bosses, not only the damage, but the hp/defense as well.
-Needs more content, I know the mod is getting updated, but it still needs more content. However, focus on quality, not quantity, find a balance between both.
Don't take this as an aggresion, I'm trying to help. Hopefully it will get better with time.
"Better Survival" is a Tmodloader Mod 
and Normal Npcs 
they drop items thats helps your make your items 
