Is it normal for Alien to clip through wall? Can the camera be rotated in the final version?

I jump straight away to quick battle for some action because i don't know what i'm supposed to do in full demo mode. Encountered plenty of UFO, shot them down and return to base, what's the objective? I think maybe because this is just a demo so the objective is not clear. (i never played X-Com before)

But the battle is interesting, not really tax your mind like any Paradox strategy games but it's balance between casual and turn based strategy fan out there. Although my game hang randomly for no reason just now. Can't pause, can't press any key. But the music and animation is fine, it's just the game stop randomly. Need to kill the process to quit the game.

Could it be a firewall or AV sandboxing the game?

In the campaign, you're supposed to shoot UFOs down and investigate their crash sites. There's a chance a UFO will be completely blown to bits, depending on the choice of your weapon like in X-COM. Fighter UFOs also seem to have a lower chance of getting wrecks than scouts, so target scouts first. Lastly, more damaged wrecks may have fewer surviving aliens, but also less loot.

The camera part is bothering me too. They'll probably fix it later, but right now I don't like standing next to walls at an angle facing south-west. Being sandwiched between objects or walls also makes it hard to see your character. It's this way in X-COM too, actually, but I found it easier to tell where your troops are in that than in Xenonauts, probably due to the simpler graphics and colour palette.

I haven't encountered the bug where aliens walk through walls yet. Are you sure they walk through solid walls instead of waist-high barriers?

Maybe the AV, but it's more like a bug. The explosion and fire still moving / animated, music is there but i can't continue to play the game. Anyway, thanks for the tip, i'll try it soon.

So far i'm liking the turn based battle, kinda like Super Robot Wars.
The world map part is bit confused me because not enough info and tool tip, but again this is just an alpha demo.

Edit: I'm sure it's higher than that. It's perimeter fence to be precise. Another question what is "Hidden Move"? Is that some kind of ambush? Can my men die from that?

Loved the tactical part, apart from the unit selection, it's bloody hard to hit the exact pixel to select one that's covered by a wall, same with trying to get to places like that [like a SW building corner] . A 90 degree map rotation [sim city 2k like] would be awesome. Then, there's the geoscape, the UI is bad, it's absurdly small [i'm playing on a 19" 5:4 screen], the buttons are tiny, the notifications aren't very visible, hope they redesign that. Haven't got far with testing the areal combat, since 90% of the time, the interceptors can't keep up, and the UFOs escape into space. Bastards! When it comes to bugs? Well, i went through a set of stairs, and jumped over a high fence as if it was knee high, nothing that can't be polished. Anyhow, it's very promising.

Assuming they follow the mode from X-Com, when it's the enemy turn (and civilian), you do not see what moves the enemy does, unless one of your soldiers has line of sight to an enemy. So you won't be able to see the enemy climbing up the stairs to the roof behind you, though you may see the shot that takes one of your men down, and should see where it came from.
Not sure how clear this is, or how to explain it better.

I see, then i guess the radar play a big part on this later?

No idea, as I haven't tried Xenonauts yet. If you can at later points get a way to see the whole battlefield, then there shouldn't be any more hidden move phase, you will just see the enemy walking/acting/shooting. If the radar acts as a minimap, then you still won't see them.

I know you're being sarcastic, but let's leave that for the "y u no want Xenonauts" thread bro. Here, we discuss the stuff of gods and armchair generals - gameplay and AARs ;)
Which part are you confused about? Maybe I can help.

Since you mentioned the perimeter fence, see if there's a hole in it. If there's a hole, units can move through it.
One thing you can do is to build one more hangar in addition to the default 3. Then, build one more interceptor. Send out your interceptors in groups of 2 and stick around an area until a UFO shows up.

That's exactly what i did, but i built that newly researched MIG in it.. It didn't even fire a shot. ;)

Also, got another funny bug, when i clicked Commence Operation, the game didn't load the map, instead, asked me to place a base on the main menu screen, thankfully, i could still use the menu, and try to start the game again. ;)

Okay just finish one more game, and lost. I need to think new strategy. It seems these aliens are always "react fire" and my troop died from 1 shot when i tried to place my troop to get better percentage hit. Is there any way to make my men move without them noticing?

Going from other games (aka the original X-Com and Jagged Alliance 2)
1) If possible, crouch or prone, not sure if Xenonauts has this mechanic.
2) If a certain soldier can see an enemy, the enemy can probably see that soldier as well
3) In the original X-Com, the aliens had a few more tiles of vision
4) Have one soldier act as scout, and another act as shooter. Move the scout forward, once you see the enemy, have the other soldier shoot him, then retreat the scout.
5) If you think there's an enemy nearby, don't use all your Time Units (or Action Points, or whatever they are called), so your soldiers can react fire if they see an enemy on the enemy's turn.

The above may or may not work on Xenonauts, but do try differente tactics, you are basically fighting a guerilla warfare since you are undermanned and underequipped at the begining. If a certain tactic doesn't work, try a different one, including the "suicide rookie".
Fill a backpack with grenades, prime one, and run to the enemy. He kills you, the primed grenade drops, a dozen or so grenades explode. It does cost a rookie, but it's just a rookie ;)

Cool, didn't know you can do that (self destruct). I think it's because i never played any X-Com title before, and no tutorial in the demo make me little bit lost. But i'm starting to get hold of the mechanic. Easier to learn than Hearts of Iron.

Pretty much what JMich said applies to Xenonauts yeah. Most importantly is to keep a reserve of TUs. The aliens usually only react once. You may want to consider firing from windows too. Fire, crouch, end turn. Always make sure you end turn in a safe spot. If you must end turn in a danger zone, make sure that, as mentioned, you have TUs in reserve. The Hunter is also bloody excellent for ramming down fences and blowing up holes in walls to allow for more tactical decisions.

-edit- Anyway I'm starting to get used to the camera, once I realized that the cursor informs you of the exact location you'll be in, so you don't get confused when moving into those one-tile passageways. Very nifty.

The UI is really good and I'm starting to appreciate it. It's very minimalistic, but it comes with all the information you need to know about your squad, in one simple glance.

-edit2- After spending more time, I was wrong. Aliens have a lot of remaining TUs, and they can reaction fire up to three times, possibly even four.

Alright, I'm trying to install the demo. But so far no success. Btw, I love it how people complain about ads on Steam while desura shoved the "purchase this game already" three time in my face during the installation. And then it didn't even start. No verification option and now I'm installing again. And I still don't want to buy it, I'm a kickstarter supporter dammit!

Sorry for the rant, but this is tedious....