- Fixed missing courier particles.

- Fixed missing courier portraits.

- Fixed the Polycount Ward appearing as an error model.

- Fixed Greevil courier appearance in hero demo mode.

- Improved performance in cases with many particle effects.

- Fixed a bug with Crystal Maiden's death animation where her body would stick around too long.

- Fixed a problem where Earth Spirit's Magnetize would sometimes not refresh from Stone Remnants in Hero Demo mode.

Source: Official Dota 2

- Fixed Brewmaster selection after Primal Split.
- Fixed Alt+Clicking on recipes.
- Fixed Alt+Clicking on items carried by an enemy Spirit Bear.

Source: Official Dota 2

* Fixed the courier returning to base if Smoke of Deceit was pinged while carried by the courier.

* Fixed some inconsistent behavior with unit selection and spawning illusions or summoned units.

* Updated some checks for the Alt key in the UI to respect both left and right Alt, as well as dota_remap_alt_key.

* Corrected damage numbers in Juggernaut's Blade Fury tooltip.

Source: Official Dota 2

* Fixed a bug with Brewmaster's Primal Split that left Brewmaster selected rather than selecting the summoned Elements.

* Featured Tournament spoiler state is now saved.

* The front page video stream will no longer auto-play if you have spoiler protection enabled.

Source: Official Dota 2

* Fix bug causing matchmaking to balance teams poorly at extremely high MMR

* Fixed issue where players who disconnected just before hero selection would not be assessed with a failure to connect penalty, resulting in the match continuing with less than 10 players.

* Fixed an issue were the free camera speed was affected by the replay playback speed.

* Added the ability to spoiler-protect the Featured tournament tab.

Source: Official Dota 2 

- Added new Featured Tournament section to Watch for The Frankfurt Major. Includes live schedule and bracket views with easy access to live broadcasts and replays

- Fixed several memory leaks in the client and server

- Reduced rendering memory usage

- Fixed a regression in GPU performance

- Direct3D9Ex support enabled by default, which improves alt-tab behavior

- Reduced CPU usage when game is minimized

- Added alt click support for showing XP remaining until next level

- Added a sound for the Aegis expiring (audible to allies only)

- Added support for player color on Boots of Travel

- All places in the UI where ping times are displayed now display the network round trip time. Previously, different places displayed different measures of latency. For more details on this change, see this post on our dev forum: http://dev.dota2.com/showthread.php?t=184807

- Fixed a bug where spectator gems were not incrementing correctly after watching a game

- Fixed Ghost Scepter with Dazzle Weave interaction

- Fixed Io portrait popping

- Fixed a bug with spikey Zeus head

- Enable normal maps in portrait views

- Workshop Importer: Fixed issue with portrait editing the where camera framing and spotlight shadows did not exactly match the in game portrait view

- Workshop Importer: Added template for chat emoticons and team logos

- Workshop Importer: UI improvements to make complex submissions more manageable

- Workshop Importer: Portrait editing UI improvements

- Fixed an issue where Radiant fountain and building particle effects would sometimes not be present when spectating

- Fixed hitboxes for Tinkbot courier

Source: Dota 2 Official

by Sonyk

THIS GUIDE IS UPDATED TO VERSION 6.85

You can easily upload your MMR alone, I recommend you use this guide.

Good Luck!

Item Build

Ability Build

Author's Item Notes

Source: Dota 2 Official Guides

by Torte de Lini

Alchemist can play a proactive role as a ganker or as an end-game carry depending on how he is built skill and item-wise. Alchemist can farm thanks to his ultimate's regeneration as well as Acid Spray, or gank in combination with Unstable Concoction and Acid Spray. Regardless, his ability to earn gold incredibly fast with Greevil's Greed is his the reason he has such fluidity. 

Alchemist suffers from a week health-pool and armour, making him frail for his late-game capabilities.

Item Build

Ability Build

Author's Item Notes

Author's Ability Notes

Source: Dota 2 Official Guides