Most people will tell you to play Blue build this early on, but fuck them. If you suck D at this game as I do, at least suck that D like a pro 17 years old home-runaway girl, and go Red Chad lancer.
By the way, you could do more damage overall with Grudge instead of Master Brawler, but it's more expensive and I don't think it's worth the trouble this early on. Once I get to Argos I do plan to use get Grudge +3.
This is my build: https://papunika.com/planner/?id=umDA...
(I only change Surge Cannon from 3-3-2 to 2-3-1 when playing Chaos Dungeon).
Time stamps:
00:00 Chaos Dungeon (Surge Cannon 2-3-1)
04:38 1st Guardian Raid (Igrexion)
11:16 1st Guardian Raid MVP
11:50 2nd Guardian Raid (Igrexion)
17:13 2nd Guardian Raid MVP