Perks
Survivor = Increases HP by 20 (can take down higher HP enemies)
Combat Senses = Increase max Awareness by 20
Composure = Increases Awareness regeneration by 10
Faster Movement = Movement + 1 (for each move = 2 for sprint)
Martial Artist = Reduces cost of Takedown by 10
Custom Gear = Reduces Reload times. Without specialisation: 1M/1AP = 1AP -- 2M/1AP = 1M/1AP // With specialisation: 2M = 1M -- 1M = Free
Cold-Blooded = Decreases Focus ability cooldown from 3 to 2
Stalker = Increases the range of the overwatch cone by 4
Peripheral Vision = Circle switches to cone at range 9 instead of range 6
Masochist = Improves dmg threshold by 6
Paramedic = Improves movement range by 2 when carrying an agent
Perks that need testing
Mild Paranoia = Improves benefits of full cover. Normal full cover = -75% dmg. Improved = ? Hard to test.
Low Profile = Improves benefits from half cover. Normal half cover = -50% dmg. Improved = ?.
Dancer = Decreases awareness cost of dodging by ?. Every time I tried to test it I got shot by full auto rifles. Decreased all awareness regardless of dancer perk or not.
The perk for increased mission XP = Saw it before, but didn't get it while testing. Amount of XP increase and where it is applied (missions on worldmap only or also for assault missions etc.)
Abilities (background or training)
Coup de Grace - Executes targets below 1/3 HP. Uses 1AP. Uses the ammo count of main attack (1 for pistol, 3 for smg)
Buckshot - Dmg to all targets in cone. Only available when using shotgun. Cost 1AP and 1 ammo. Dmg from equiped gun. Range = 8 at the middle to 7 and 6 to the sides of the cone.
Vigilance - Increases circular overwatch by 4 for 1 turn. 1 movement cost. 2 turns cooldown.
Heartbeat Sensor - Reveals all enemies in a radius of 9. No LoS needed. Cost 15 awareness. 2 turns cooldown.
Blinding Laser - Disables enemy overwatch + prevents them from fireing next turn. No range restriction, LoS needed. 3 turns cooldown. Doesn't trigger combat.