A demo (DRM-free) is available here:
https://store.steampowered.com/app/3034660/Dunebound_Tactics/

Againas I keep saying to people needing Steam launcher without workarounds for a game isn't drm free at best it is a minor drm that's not intrusive and easy to bypass

The steam launcher is not required in any way. The demo can be run without any problem from its exe. I have never even downloaded, let alone used, the steam GUI client.

Then how do you legit download it from Steam? seriously last I checked without workarounds one needs Steams app/launcher to download games/demos then can get rid of it if a game doesn't mind not having such ..granted I haven't used Steam much for gaming sense discovering GOG so maybe things changed

Not sure how to do this as when I try to download the demo via Steam I only get two options. Either I need to have the Steam Launcher installed before I can download anything or the other option is I have to download the launcher and install that first. I can't even get to the game to access its exe. How do I access the game without using the launcher? Thanks.

I use a command-line tool called steamcmd (similar to gogrepoc, but dumbed down):
https://developer.valvesoftware.com/wiki/SteamCMD

More details, if you are interested, can be found here:
https://www.gog.com/forum/general/keep_your_eyes_wide_open_and_get_the_best_deals_during_our_insomnia_promo_a77de/post741

If you need a short tutorial about using steamcmd, just let me know.

Biggest issue here is this isn't even mentioned as a option by Steam openly and isn't that commonly known as its not talked about much if you led with Steamcmd despite me still not agreeing its drm free proper but what people has come to refer to as''DRM-FREE Lite'' then I'd been fine as other people just mention workarounds and different launchers/apps rather then this as why they say something is drm-free

Thank you for the info - and a short tutorial would be most welcome :)

Would be cooler if the vehicle is worm-like (subsandarine).

Short tutorial on SteamCMD.

The two most useful commands are:
(a) to download and install a new owned game, or to update an existing owned game:
steamcmd +force_install_dir [PATH_TO_GAME_DIR] +login [STEAM_USER] +app_update [GAME_ID] +quit
- the numeric game ID is found on the steam game page URL
- the tool is clever enough not to do anything if the game is already up to date
(b) to claim a free game or demo that does not have an "add to library" button on steam's website
steamcmd +login [STEAM_USER] +app_license_request [LICENSE_ID] +quit
- one way of finding the numeric license ID is by right clicking on the "download" button and selecting (in Firefox) "Inspect (Q)", then looking for the number following "steam://install/"

Thank you.