Atavus will give you an arcanite chain mail (very light and strong), but only if you become his champion, which probably won't happen
As far as weapons, the scimitar and spear are in 2 different categories, so even if you have high strength, you will not be able to use your spear well. Spears and halberds are both in the pole-arms category though, so I would suggest using a halberd to train strength next time, since you are at the same time training your skill with spears.
What's your Endurance at right now? It really depends on the character but in general I would say, try to beat Genetrix. If she gets you dark red, then run and teleport any plants that get in your way. Then go back to UT2, rest, come back and try to get her again. If she makes you dark red again then it's best to just teleport her away and go to Attnam, or, go back to UT1 and UT2 and find some more monsters to train with.