By pressing the quit key (Esc by default) without confirming to exit, or by pressing the pause key (P by default).

If mines are not mentioned, the mines explode after 3 seconds.

1. Select Switch Hedgehog in your ammo menu (if you don't have it, you may find it in an utility crate)
2. Press the Attack key (default: Space) once
3. Press the “Switch hedgehog” key (default: Tab) to switch between different hedgehogs until you find the one you want

See the Switch Hedgehog page for details.

Move:
Press the [Left] and [Right] cursor keys to walk.
Press [Enter] to jump forward.
Press [Backspace] once to jump upwards.
Press [Backspace] twice to jump backwards.

Aim:
Press the [Up] and [Down] cursor keys.

Shoot:
Press [Space].

Switch weapon:
Press [F1]-[F10], or use the weapons menu, accessible via right mouse button click

Switch between hedgehogs:
See “How do I switch between hedgehogs?”.

Turn around without walking:
Hold down [left shift] and press the [left] or [right] cursor key.

Adjust sound volume:
[0] key is for volume up, and [9] key is for volume down

Set timer of e.g. grenade:
Press [1]-[5] keys

Set weapon bounciness:
Hold down left shift and press [1]-[5]

Control the direction of air attack:
Press [Left] or [Right] cursor keys

Construct different girders:
Press [Left] or [Right] cursor keys when using construction tool

Note that you can configure most key bindings in Hedgewars, but you cannot change the key combinations directly.

• If you hover an ammo symbol in the in-game weapons menu (rightclick), you will see a decent explanation. If this tooltip does not appear, activate it in Preferences → Graphics → Show ammo menu tooltips
• Also see the online Weapons Manual

60.

See Chat commands.

By programming it with the Lua programming language by using Hedgewars' Lua API.
You first have to learn how to program in Lua. See https://www.lua.org to learn more about Lua. Lua is one of the easier programming languages to learn.
Continue by reading these articles:

• Lua Guide
• Missions

Feel free to ask for specific help in the forums or in the Hedgewars chatroom.

You can also use HedgeEditor to create missions, but it is very experimental and rather unwieldy to use, and it can't be used to create more complex missions.

The Hedgewars Knowledge Base has extensive guides to create almost everything:

• Creating Flags
• Creating Graves
• Creating Hats
• Creating Maps
• Creating Forts
• Creating Themes
• Creating Voicepacks

First, you should package your contribution in a HWP archive, if this is possible or needed. Using HWP archives makes installation super easy for everyone.

Then, upload it to a reliable server. See the following question for a list.

After uploading your your contribution, you might want create a post in the Content Contributions forum to announce it to the public and to invite discussion. Please also read: Submissions: Guide and threads. Don't forget to post a link to the hh.unit22.org page or wherever you uploaded your file.

Finally, talk about your contribution in our chatroom or in the in-game chat.

Here:

• Maps, themes, forts, scripts, missions, mission maps, voicepacks, hats, flags, graves, music (if packaged as a HWP archive): hh.unit22.org
• Demos: Demos page
• Game schemes, weapon sets: You can't upload these directly, but you can post them in text form in this thread: https://hedgewars.org/node/3857
• Teams: You can't upload these directly, but you present your team here: https://hedgewars.org/node/1172
• Hand-drawn maps, savegames and other files: There is no dedicated place for this yet. You're on your own.

No matter where you upload the file, PLEASE make sure to upload your contributions on at least one reliable hoster (such as hh.unit22.org and hedgewars.org) so your contribution can be downloaded for years to come. Do not only upload it on crappy one-click hosters like Mediafire, RapidShare, Uploaded.to, Filedropper, etc. and then walk away because they regularily delete files. We don't want to discourage and particular hoster, but please be aware of the hoster's deletion policy.

We can't stress enough how important using a reliable hoster is; a large amount of past contributions have already been lost because of this.

It's asking for a password because the nickname you chose in the game settings is registered on hedgewars.org. If you own this nickname on hedgewars.org, just enter the same password. If you do not, go to the settings menu and change your username to something else.

The official game server caches user logon data for performance reasons.
Therefore it can take a while until you can logon with your new password (until that the old password should still work).

However, if you ask then nicely, admins can clear the server cache for you, so that you can use your new password immediatly after.

Check your firewall configuration before reporting a bug. Hedgewars needs 46631 TCP port opened at the server side. LAN must also provide UDP datagrams broadcasting for automatic server discovery

See Building Hedgewars from source code in the Hedgewars Knowledge Base.

tell cmake a path to Qt manually:

$ export QTDIR=<qt dir>

or

Yes we do!
More info here!

Yes we have, see:
http://www.hedgewars.org/download.html#sourcecode

Hedgewars development follows a strict development/testing/release circle.
Please have a look at our Release Schedule

Yes.

You can visit the Hedgewars steam page here.

Because we need a portable and easy to maintain GUI widgets for game and options setup. It would be unreasonable to maintain self written GUI. Currently we have no time and manpower for it. We are interested in developing a game and game features, not to implement our own crossplatform GUI library/framework.