I don't find it that difficult. You have your 3 button combo bread and butter, Hypercharge which unlocks two actions, one single target blast and one AOE blast. you have a heat gauge that is for Hypercharge usage and a battery gauge for you auto turret. Deploy your auto turret when your battery gauge is at 100% for maximum uptime. It auto attacks so no need to bother with it while its out. Plus at level 80 it turns into a bad ass robot! You have an action called Reassemble which makes your next action a direct crit. Use it with Drill or Air Anchor for massive damage! Your AOE action Split Shot has the most aggravating sound effect in the game but it does pretty good damage.

The only thing that's even remotely difficult (and its not really) is your Hypercharge window. You want to have enough skill speed to get 5 uses of Heat Blast or Auto Crossbow before it expires. I also weave ricochets or Gauss Rounds in between heatblasts.or Auto Crossbow because they have multiple uses (3 in total i believe) and are instant. It's got some awesome animations and the best level 80 armor set int he game to me! It looks bad ass, especially on my Bun Bun.