Brainwall is merely a shield that protects the brainer's... Well, brains. This quite small device could be worn like a necklace, or in the back of your neck and connect it to a external spirit battery via spirit cable. The very small size of the device makes it easy to hide under clothes, if necessary.
The device is simple. When activated, it creates a small shield that just barely protects your head (Only from the location you are looking by the way) and keeps the syker's most important thing safe: His brains! Order now! (Spirit batteries not included)
Why would your syker need this? Got any nifty powers that need visual contact? I bet you do. Tired of getting your head targeted when you lift your noggin from cover? This device will slow down those pesky headshots so you can concentrate.
I tried to make the device as small as possible and keep the drain quite low. The basic idea of the device is this:
The Syker is behind a cover (A table, wall, car etc.). He needs to see his enemy to blow his brains out, but when he tries to come out from the cover, the enemy of course tries to shoot his noggin.
That is when you activate this device (with the external spirit battery) and show only your head to the enemy and of course, the shield now covers the face = you can shoot him / think him to death without problems.
When the enemy actually hits you, you use strain for the shields "combat drain"
Example: A headshot with a normal pistol would be 5d6 (3d6 + 2d6 for a hit to the noggin). The AV 4 reduces The damage -> 5d4 -> 4d4 -> 3d4 -> 2d4, which would mean the combat drain is 4 (1 die reduction + 3 dice negated) and 2d4 damage slips through (Yeah the AV does not really negate ALL the damage, but hey 2d4 compared to 5d6 is a big difference).
And when the combat drain hits, your brainer uses 1 strain to give the device 5 G-rays to use (1 G-ray is lost).
And a few other things I should mention:
The AV -could- be better, but then the x/round drain would also be higher.
For the same reason I chose to keep the shield Flat. This is not made for epic mass battles where you are shot from all the sides, only for 1-2 enemies when you are behind cover.
External spirit battery is not too hard to get, and it is easily placed in your belt, while the Spirit cable is connected under your clothes. The powerpack option is possible, but I'd rather go with the external power source option (Maybe you carry a Reactor in your backpack, how should I know...)
And then, the calculations:
Size Structural Slots Durability Load Examples
1 3 7 4/1 0.5 Large knife, pistol, rat
Associated Spirits: Building
TN: 11 (Base 5 + 1 Size + Raise for faster activation)
Mechanical: 10% 0,7
Structural: 30% 2,1
Size 2 (A head is about this size I guess...)
2(Size protected) * 4 (Armor value) / 4 (Flat shield)= 2
= uses 2 slots, 1GR / round drain
Power: Brain Drain
Associated Spirits: Tool
TN: 10 (Base 9 + 1 Size)
Electronic: 30% 2,1
Highest Drain = 1
2 * 1 = 2(Brain Drain uses a number of slots equal to twice the highest single power Drain in the device.)
Powerjack 2 slots
Power Slots Drain
Shield 2 1GR / Round
Brain Drain 2 None
Powerjack 2 None