User blog comment:ErrorZip/Preps for hardmode?/@comment-4742863-20120110182911/@comment-4736356-20120110232956

Make some obsidian skin potions and bring some fins til you got the bridge built... Oh, or get a cobalt shield, you can find them in the dungeon, and you can even combine it with your obsidian skull if you have a tinkerer's workshop. The shield removes the push from enemies.