UngeheuerLich
Legend
2nd level means you are behind for every level thereafter.2nd level is good choice,
Action surge is not really valuable at 2nd level, so 1st you get damage riders, then you get action surge.
3rd level is 2nd level fighter, 1st level ranger,
HM->TWF->Action surge, that is 4 attacks in 1st round for 2d6+3 damage.
also ranger provides you with extra skill and 2 more masteries.
But I guess, with dual wielding and hunter's mark, the fighter might probably keep up just enough to be ok at level 4/1.