Changelog for Update / GOG-4 (Windows) / GOG-2 (Linux) / GOG-2 (Mac) (added 10th October 2016):

- Added more places to hide, more ammo packs and balanced the number of more difficult enemies in Ironworks Facility levels.
- Added options to turn off HUD health feedback (hurt noise and low HP warning overlay) for people who don't like it

Changelog for Update 2 / GOG-3 (Mac) / GOG-3 (Linux) (added 10th October 2016):

- Added: an option to clean-up all gore each time you respawn (Settings -> Video).
- Fixed: not working skull achievements.
- Fixed: being able to go outside of the map in jungle, level 1.
- Fixed: railgun ignored picking up ammo when charged.
- Fixed: grenades (and likely other window-breaking projectiles) could tunnel through wall if shot through overlapping breakable window.
- Fixed: level browser menu impossible to navigate with gamepad.
- Fixed: slight sound tweaks here and there.

Changelog for W.I.M.P. / GOG-5 (Windows) / GOG-4 (Linux and Mac) (added 23 December 2016):

- BUTCHER W.I.M.P. (Winning Is My Pleasure) is an easy mode update that will allow you beat levels only for the price of losing your dignity (if you have no dignity already, you lose nothing!).

- Warning! Side effects might include:
- Depression
- Lower self-esteem
- Socially inappropriate behavior caused by the loss of self-respect
- Feeling offended
- Sleep disorders

- Also, we've recently added the following features:
- Better gamepad support (especially XBox and DS4 on Windows)
- Key combo support in controls settings
- Multiple save files
- Compatibility tweaks and minor bugfixes

- Note: if you would like to remove the changes made by the W.I.M.P. update then you will need to remove or rename the wimp.txt file found in the game's directory and restart the game.

Better gamepad support:

- Supported gamepads and operating systems (the list might grow in the future) - if not on the list, it might work, but no guarantees (we have no way to test everything, especially on non-Windows platforms):
- Windows 7: XBox 360 (wired and wireless), XBox One, DS4, Logitech F310
- Linux (Ubuntu 16.04, default driver): Xbox 360 (wireless)
- OSX: Logitech XUSB, DS3

- Slight auto-aim and rebindable gamepad layout.
- Advanced settings for unrecognized gamepads (or not recognized properly) - old "experimental" section.
- Possibility to turn off gamepad menu navigation in cases of improperly recognized gamepads.
- Possibility to change dead zones for walking and jumping.
- No keyboard layout select popup if gamepad is used in-game.
- Combo keys support - just press 2 or more keys in the key config prompt.
- Multiple save files.
- Level browser is accessible regardless of the progress of the game.
- Fixed: shader compatibility issue that caused low framerate in rare cases.
- Fixed: black screen issue (fix worked on Windows 8.1 and integrated Intel GPU).
- Fixed: city 4 end-arena elevator bug.
- Fixed: city 3 lighting didn't work properly from time to time.

Changelog for Update / GOG-6 (Windows) / GOG-5 (Linux) / GOG-5 (Mac) (added 02 January 2017):

- fixed a serious bug that affected gamepad performance in Linux

Changelog for update / GOG-7 (Windows) / GOG-6 (Linux) / GOG-6 (Mac) (added 28 February 2017):

- This update adds the Level Editor to Bucher.

Well thank you kind developer :)
I noticed butcher featured the level editor on steam and wanted to try that on this version.

The things a Butcher does for the Win... ;-P

Changelog for Update (added 07 October 2019):

- Added new languages: German French Spanish Portuguese

Standalone installers updated:
- Windows (W.I.M.P. (gog-8) ⇒ W.I.M.P (gog-9)): 08 October 2019.
- Linux and Mac (W.I.M.P. (gog-7) ⇒ W.I.M.P (gog-9)): 08 and 09 October 2019, respectively.