Raids have been fixed to be solo-able however without a twisted bow it is hard to penetrate Tekton's defence. Quickest way sometimes is to suicide chally spec Tekton, costing points. If it was meant to be like that, fine, if not, I think it deserves a small nerf.
Rarely did I have enough Xeric's/brews to kill Tekton (takes up to 7-10 brews sometimes), leaving you with absolutely no supplies at Olm. Therefore, suicide is (for me atleast) the most effective method.
Another method could be to hunt the bats and cook them. However this would cost inventory spots, having a tinderbox & kindlings, taking like 3-4 spots. It's quite complex and difficult to kill Tekton, I can say that Tekton is even harder to tackle than Olm in solo raids.