Current Things not done:

• Create New World menu
• Settings/Options menu
• (if possible) make it so the world jitters when near the Farlands.
• (if possible) make the mobs kind of "jittery" when hit.
• Achievements screen
• Some achievements like "Getting Wood"
• Remove modern achievements

What is currently in:

• The Farlands
• No hunger bar
• No sprinting
• Old terrain (nearly 1:1 with actual Beta! Only things off are Feature placements like trees.)
• Classic crafting recipes
• Ore dropping itself instead of raw variants of Ingots
• Beta 1.7.3 textures
• No emeralds
• 128 build height limit
• Old lighting system (may not be accurate)
• No stone variants (Diorite, Granite, Andesite, Deepslate, etc.)
• Old main menu
• Old crash screen
• Instant eat
• Old mob drops
• Old mob behaviour
• No way to enter The End
• Basically made all new blocks, entities, and items from versions above Beta 1.7.3 unobtainable/impossible to find in Survival
• Can change tool/item and still mine the block you are currently mining
• Logs are no longer rotatable
• Achievement Toasts show up by going down then up after some time