Revision #1822 — Coming back from Map 4: what changed

The biggest changes since Map 4. The full list is on What changed in Map 5.

What you kept

Everything else starts fresh, including /pv, gangs and pets.

Prestige (your level) is now Ascension: /ascend. /prestige opens pickaxe prestige.
Pickaxe prestige has 4 steps. P4 is Tartarus and still needs a Tartarus Sigil on a P3 pickaxe.
Reforging Sigil is now Reforging Stone. Erebus Pit is the PvP Pit. Blood Magic is Stoneskin.

The Forgotten Polis, shades and wraiths are gone. /expedition opens solo maps with Normal, Magic and Rare monsters. See Expeditions.
No boss essence. Boss keys drop from Expedition end bosses, more at higher area levels, or cost 15,000 Tribute.
The Sacred Way is gone. Fissures open at area level 100+, and Avatars are on Sacred Maps for 100 Ichor.
An Uber takes 4 of its fragments, combined at its altar. A whole key still works.
Typhon is new: one Etna Fragment from each of the four bosses.
The Hunter Tree is rebuilt (/hunter) and starts with no points.

Excavation is replaced by the Vaults of Plouton. Doors open in the ore wall from level 20 and stay open 60 seconds.
Pickaxe stat picks are replaced by /miningtree: a point per level up to 100. Your first Ascension unlocks one of six classes.
Armour mining enchants no longer roll or apply. Wear armour for its Armour.
Shatter blocks pay ore only, unless the pickaxe has Residual Knowledge. Powerball and Earthquake proc half as often but pay like blocks you mine by hand.

Cells and generators are replaced by Siege bases. /cell, $100,000 at level 30. You need one to earn Drachma or Tribute. Raids are a PvE fight against a base's guards.
Gang top adds up your best 5 members' trophies above the starting 400.
Trim set bonuses are gone. Each trim rolls its own stats. Armour is one stat, so wear a full set of your best tier.
Shopkeepers no longer buy loot. Use the Salvage Bench at spawn (final) or the Auction House.

The Fund. KOTH, the Rift, the Pit, outposts, the Oracle and all four Ubers are open from day 1. The Pit needs level 60.
Erebus Tears, the lower Pit and Erebus, the Unlit.
Skywars. The scheduled PvP event is the PvP Tournament.
/autoclicker. Hold right click with a sword or axe on monsters.

The level cap starts at 30 and reaches 100 on day 9. Ascension opens on day 12. Check /levelcap.
Rift time is 10 minutes a day, down from 15.
Dying in the Pit drops your inventory, except pickaxes and satchels.