Thanks for the guide! This made me start Keegan journey and is all I play currently. I haven’t found a better build than the Final build you proposed. A few tips I found out by myself and could help other people becoming better at Keegan:
Best locker setup for me: 1 Salvo, 1 Boomshot, 2 GL. In hand: Dropshot and Boomshot.
Why: You need a second or third boomshot (3rd gets replaced later) asap. Otherwise you just don’t have the ammo to clear waves if your team is mediocre. If you have little energy a Salvo/Boomshot + GL is enough, so you need a minimum of 2 locker spots.
Salvo gets used for 2 things: Filling up ultimate and damaging a far away Matriarch (it ALWAYS damages and applies bleeding, even shooting the front).
GL gets used for 2 things: Filling up ultimate by bombing spawn/groups of enemies. And for getting a second ultimate quickly in a bosswave (just spam the rockets on a boss). In addition and very important: With a GL and boomshot you can solo Swarmaks. I just spam the front with boomshots (stunning him due to blister pops) during ulti and then use the GL on top of him to take out the other blisters. It seems impossible to kill a frontal facing Swarmak without GL.
Dropshot: I underestimated the dropshot. It’s a rather difficult weapon to use correctly but can be more powerful than an instant active boomshot in some situations. First of all: The dropshot fires more quickly than the boomshot during ultimate. If we are overrun you can use the dropshot to explode everything shortrange (in cover, using blindfire or even bouncing from walls). Secondly: You melt certain bosses close range. If you are confident in your ability you can headshot the Snatcher/Carrier or even Matriarch closerange and deal more damage than you could with a boomshot. (Missing shots can be costly as they can explode you, so it takes practise). I have gotten a lot of reactions in gamechat and whispers, some are astonished and some think Im cheating.
Specific boss tips:
Matriarch: Salvo always damages the Matriarch! Boomshot: Don’t shoot the boss directly (not even the backside), shoot the ground on the sides and backside of the Matriarch to damage her.
Swarmak: Spam boomshot in the front to pop blisters and use the GL to pop the other blisters. Without GL it becomes near impossible to kill a Swarmak from the front for Keegan.
Carrier: Very easy to spam the dropshot on. Not even JD with artillery and GL can outdamage a Keegan if he does it correctly.
Sentinel: Spam walls behind and on the sides if possible to kill a low HP sentinel. Especially if my ultimate is on CD I prefer doing this since it fills the ultimate (hitting shield does not). Spamming a shield during ultimate is good however, since people seem to focus the sentinel faster when the shield is down.
Kestrel: Find a good ulti position that allows you to retreat and go back in the open. Spam the engines with the boomshot. It seems that hitting the engine directly with a boomshot deals insane damage. And what’s better than a boomshot hitting a Kestrel engine? That’s right, 30 boomshots hitting those engines.
When ultimate ends: Depending on boss, switch to salvo or GL to quickly get a second ultimate. It’s not uncommon for me to get a 3rd ultimate and even a 4th if the team damage isn’t that good. For example, a wave 12 Master Frenzy run with a Matriarch and Carrier I could use my ultimate 4 times while doing 1.3 million damage (1million+ damage is uncommon but certainly not rare).
Ultimate: You actually become MUCH tankier, even able to tank multiple Salvo hits or at times a matriarch charging you. If you set up your ultimate in a way that makes it so you can go in the open AND retreat while in ulti, you can actually solo push back entire waves that overrun you. Good examples are Blood Drive and Forge. I just pop the ulti, spam the dropshot to clear close enemies and switch to boomshot to clear the others. Keegan is the only character I’ve seen that can do this so effectively. A JD could do this, sure. But often when pushed back your lockers are destroyed or out of reach. Good luck to that JD with only 1 GL and a boomshot. Keegan just needs a boomshot, a dropshot makes it a bit easier.
Last tip for the ultimate: Early game, when you have no ammo perks, max reload perk or multiple explosive weapons you have to end your ultimate with a full boomshot. Otherwise getting your ultimate back takes too long. This is also a reason why I love having a Dropshot as my other weapon. Playing Keegan is basically managing your ultimate and spending the least amount of time waiting on that cooldown. Wiping happens when you need to wait on that CD and have no ammo, for example when someone steals the weapon from the locker you expect to use to refill ulti.
EDIT: I’ve found that using your ulti to mainly help your team during difficult situations usually isn’t too effective. Most people underestimate how much tankier they get and therefore move out of radius easily. Other times the whole team is in ulti just tanking shots and once it runs out they all get downed instantly. So I would say to just use ulti to benefit yourself most and don’t worry too much about your teammates. The radius is huge with lvl 6 card, so everyone that wants to use it should be able to.