This is for A-wall.
I have been very bummed at the very low amount of use this tactical gets. Earlier in this games life everyone complained that everyone used it and it got nerfed.
But I refuse to stand by this. So I use it. The best part is seeing the utter look of failure on people's faces. (Even without facial expressions.)
It's a good suprise. Cloak, grapple, holo, those won't do very good in the heat of battle. But when the enemy thinks they got you dead, a suprise A-wall can help turn that fight around.
Begin placing the A-W before entering the combat so that when you touch down, it comes with you. Great for clearing out large groups of people. However, it's current touch down speed isn't very quick and discourages the use of short range weapons like the shotguns or the SMGs. I use the flatline.
Defend your A-wall. The hard part is defending, but that might change depending on weapon loadout. With the flatline (a mid to long range) killing someone at close range is alot more difficult, with the odds switched on the CAR or the Volt. When your A-wall is placed, you can bet people are going to jump over it. This way you don't get the shield or the amp. To prevent this, spend the whole time moving around behind the A-wall. Think about angles and try to kill them before they get up. If they do, move. Confining yourself behind that spot will get you killed. Works once out of three.
Phase Shifts. These guys are just too funny. When fighting, watch for phase shifts in front of you, to the sides, and what not. When someone phases, take out your nade (I prefer frag) and then move. Gain altitude and move back away from the wall. (On the shoot through side) When they come out, chances are they will be right where you were, facing where you were for an easy execution. Frag 'em.
For the maximum amount of A-walls put Tactikill on your gun, and Power cell on the pilot. The A-wall's cooldown will lower in save so you get it faster once the A-wall finishes. Post Tactikill nerf, you need 4 kills to get a new A-wall on the spot. However, doubles and triples are more common. This is where power cell comes in. Your A-wall will be wasted. I have gone into fights many a times where I had 5 marks. By the time I can fight (half a second later) all marks are gone. Power cell is more forgiving allowing you to get your a-wall back quite fast. I am yet to time it. Remember Minions do NOT count for Tactikill.
Never put your A-wall in the same spot twice. With power Cell and Tactikill, you can get your A-walls fast enough to allow you to adapt to the fight. No more sitting there waiting for that mark to come out of their cover. Go over there, kill them, then move your A-wall there!
A-Wall doesn't have to be for camping. Often I place it, get ONE kill instantly, then leave!
Help I'm trapped in a signature factory