Are the patches cumulatives or they must be installed one by one?

Patch 1.1.5.1 (10 November 2016)

Balance and gameplay changes:

Boss spider: on higher difficulty HP will be restored only up to phase-related tiers.
Boss spider: fix for lack of stomps during movement.

UI changes:

Added Multiplayer Chat
Browsing a list in the equipment menu will now stop when reaching topmost or bottommost item on the list.
Added an option to skip prologue when starting New Game Plus
Orbs of Masamune count will be displayed only after picking them up for the first time
Fixed a crash with entering the inventory while dropping a turret weapon
Weapon Selection Circle now supports inverted mouse, improved mouse selection acuracy
'Resume game' will no longer be grayed out when using controller
Normalized aim responsiveness for controller

Engine fixes:

Fixed refraction
Compressed audio files / sound stutter fix
Fixed shadow flickering

Photo mode:

Editable text boxes
Fixed screenshot saving issue for non-unicode languages in Windows.
Fixed slow-mo effect and mouse speed when entering photo mode while performing Vortex attack
Added 'Sharpen' option in photo mode
Added 'DoF strength' option in photo mode
Added 'Lock first person camera' option in photo mode

Multiplayer fixes:

Fixed being stuck on menu screen when dying
Fixed Marvin special rabbit proc
Fixed Second Chance perk
Fixed a blocker when players sometimes got stuck when using a vendor and teleported to a boss fight.
Fixed Vanish being cast on host when a client used Blade of Exile
Fixed interacting with vendors for co-op partners
Fixed a situation in which client could lose a deployed turret weapon after disconnection / leaving the game
Fixed host crashing when a client leaves game after using a turret weapon
Fixed recovering multiple turrets in multiplayer mode
Fixed a cutscene for clients in "Ninja'd Scrolls - Part 1" quest
Client turret will now consume ammo
Fixed the disappearing portal for co-op partners in "Big Trouble in Calamity" quest
Fixed lack of music in main menu after disconnecting from co-op game
Fixed gates for co-op partners in "Big Trouble in Calamity" quest
Fixed several stability issues
Fixed players gaining/losing movement speed
Fixed acquiring Blade of Exile by co-op partners
Fixed rotation of quest items for co-op partners
Fixed disappearing minimap icon of shrines

Gameplay fixes:

Fixed bug where player cannot gain Karma after reaching character level 95
Fixed potential blocker while fighting Belly
Fixed places in the Hub where player could get stuck
Fixed weapon being transparent after it was used as a turret during Vanish and later picked up after Vanish ended
Fixed hold RMB to channel healing
Fixed auto weapon change when out of ammo.
Fixed client climbing cancel on cutscene launch
Fixed weapon autochange after running out of ammo for manual detonator and laser guidance gems
Fixed places where player can get stuck
Fixed a rare issue with katana force slash crashing the game.
Fixed door opening in Yakuza Mansion
Fixed enemy Herculon not attacking after loosing an arm
Enemy navigation fixes
Fixed enemy Hammerhead behavior after losing left arm
Fixed weak spot achievement for melee weapons
Fixed issues with enemies using 'harpoon'
Fixed Ancient Goddess Ameonna hp bar on death
Fixed sending sound signal from explosions

A delta-patch will be made at some point for the Galaxy version. The only thing we can do for now is wait.

There's another thread where we are talking about this. If you keep an eye on it, someone will probably mention when the Galaxy delta-patch is available. My guess is it will be sometime tomorrow when people are back at work.

Would had been nice if it was done on Friday seeing how the patch was released on Thursday (on Steam, later on GOG) but maybe it got missed or forgotten about before people went home for the weekend. Or maybe something went wrong and couldn't be fixed easily.

"...There's another thread"

Thanks for your answer.
A link to that "thread" would be even more helpfull.

Here it is: https://www.gog.com/forum/shadow_warrior_series/download_the_entire_game_every_time

Exactly!
Thank you very much

Apologies. I should had linked it but yes, what Wolfox posted.

Changelog for Patch 1.1.6.0 / GOG-9 (Windows) (added 08 December 2016):

The Way of The Wang includes:

- Seven Brutal Trials
- New Crafting Modes
- Infuse Gem - merge gem with weapon, available after finishing two Trials of Infusion
- Purify Gem - remove negative stats from gem, available after finishing two Trials of Purification
- Embed Gem - upgrade base weapon stats, available after finishing two Trials of Embedding
- New Weapon: Fist of Gozu. Finish Trial of the Ancient God to receive this powerful weapon
- Five New Achievements
- Three new difficulty Tiers for Insane difficulty


Updates Include:

Photo mode:

- Fixed photo mode camera orientation reset when changing fov

Engine fixes:

- Fixed 'Saved Games' relocation
- Corrected blade intersection test
- Fixed missing shadows after changing a map or weather
- Gamepad sensitivity curve adjustments

Gameplay fixes:

- Fixed blob transformation when he is electrocuted
- Fixed Warlord force slash bug
- Fixed incorrect Vanish behavior
- 'Plasmoid' camera clipping fixed
- Pickup item disappearing on hard landing fixed
- Alt weapon ammo counter fixed
- Mech: fix for minigun and grenades killing other enemies
- Fixes for places where player could get stuck
- Added missing minimaps
- Fixed 'Second Chance' skill trigger on Blob transformation
- Various audio fixes

Multiplayer fixes:

- Fixed rotation of some quest items
- Fixed damage caused effects for other co-op players
- Fixed a bug where co-op partners get level up while still in loading process
- Fixed disappearing weapon after cutscenes in some circumstances
- Some optimizations
- Fixed quest sword not showing up for clients
- Fixed barrier not spawning when fighting the last boss
- Fixed a situation in which client is blocked in hub after he is teleported to a cutscene from active mission
- Fixed chi and health not regenerating while in hub for client that teleporting to a cutscene
- Fixed client spawning outside of temple when dying during the fight with acolytes
- Fixed a possibility for a client to be forcibly teleported to a level from hub
- Fixed quest giver Kamiko not spawning for clients in hub area
- Fixed client block on 018kmh after last cutscene
- Fixed door sigil for clients
- Fixed taking damage from neutral opponents
- Fixed anvil not showing for clients
- Fixed Kamiko's spikes remaining on map for clients
- Fixed an issue with client seeing closed vault doors after he joined during a cutscene

UI:

- Levels of other players are visible on their avatars
- Players will get notifications via multiplayer chat about teammate's death, level up, connecting and disconnecting

Is the new free DLC already inside the game, or you need to add it manually (like other free DLCs on gog)?

Based on what MaGog reports, and the discussion in the news thread, it's consolidated within the updated installer.

But since I don't own the game, best ask in the above mentioned thread.

After installing version 1.1.6.0 the game no longer launches; I get an error that says "Shadow Warrior 2 cannot launch." Is anyone else having this problem?

I had that problem. If you uninstall the game and then install it again it should work.

Thanks for the reply. I did that and the game worked. Thanks again for your help!

So why is it that we have to wait 3-5 days for th egam eto be updated on Gog.com vs. Gog galaxy that gets it instaneously? Is this their ploy to get us to use Gog Galaxy? Because if so all its doing is pissing me off. If this is the future of Gog, i'm starting to lose faith here. I don't like shady and this seems very shady to me. Don't turn into the rest Gog. It's not a good look. Seems you want us to redownload th egame everytime from Gog.com or wait days for the patch. What gives? What is going on over there?