Walls
Wall with a hand

Touch the wall to make it lift up for a couple of seconds. It will go back
down after a few seconds. Back droids can also shoot to open the door from a distance When the wall comes back down, it has a destructive effect on what stands under it. Encounters
get hurt and object are instantly destroyed..
Wall with balls

Step right in front of the wall and click the Up/Forward movement button
with the right mouse button
to push the wall forward. The game
engine ensures that there's nothing important behind one of these walls, but
if you decide to push the
wall more than once, it is your responsability to make sure you don't block
anything with it.
Wall with a hole
Click on the panel to open the hole. You can then use the Anti-Grav
Dev-Scape to walk on the ceiling
and use your two droids at the back to shoot encounters located on the other
side of the wall. You can
also charge your hand with electricity and shoot bolts through the hole with
or without Anti-Grav.
Fake Wall

The example above shows that the droid sees a wall in front of the camera, but according to the "Mapper" Dev-Scape and the view of the camera, there is no wall. This is what we call a fake wall which is a wall the droid can simply walk through. If the droid has the "Vision Correction" Optic, fake walls do not appear.
Wall with a panel

Click on the panel to open it. It can reveal many different things, but can
also be a trap to open a
wall nearby which releases an encounter. To know if the wall will release an encounter, use the radar and look near your current location. If the radar indiates that there is a square nearby occupied by an encounter and that it doesn't move at all, there's a 99% chance that the panel will remove a wall which will release the encounter.
Wall with bars puzzle

Locate the clipboard that has the matching number to reproduce the
combination by clicking the bars
with the left mouse button. If you have trouble finding the clipboard of a particular puzzle, you can use the lock decoder found in the tools section.
Wall with buttons puzzle

Locate the clipboard that has the matching number to reproduce the
combination by clicking the buttons
with the left mouse button.
Wall with a single lever

Touch the lever to activate/deactivate it. It will open a wall, remove fire
or open a door.
Sometimes, the lever will only work the first time it's activated (ie. it can't undo what it did)
Wall with three levers

Touch the levers until you hear a 'click' that indicates that the right
combination has been found.
It will open a wall, remove fire or open a door.
Sometimes, the lever will only work the first time it's activated (ie. it can't undo what it did)
Wall with a hidden button
When you have stepped on a grate that has closed a wall behind you, you will be trapped in that
section of the base until you have found one of these. Click on the brick
to remove the wall
that appeared when you stepped on the grate.
Note that for the base 2 and 3, these buttons are already pushed in when you open the cupboard and your task is to push them out by clicking on them. The purpose of this is to make it easier for beginners to understand the concept of these grate trap unlockers.
Wall with a power socket

When the mouse cursor (your leader's hand) touches a power socket, it becomes charged and can fire electric bolts to damage encounters. Power sockets can also be used to recharge the droids chest and batteries by placing them on the socket. Anything else that touches a power socket will explode.