Anyone have any tips or helpful info on working this champ. Really wanna get it to at least undead gargys solo if possible but havent really had much luck.
No idea how one guy is going to solo it to third tier, which is what you're aiming for. If you need to kill undead gargs, just key up Medusa, and wait for her to release the few of them that spawn with her.
Otherwise, I bet the SA forum has a ton on the spawn too, if you look around. I'm too lazy to link. But probably you want some sort of crazy necro archer mage if you have any hope of doing the spawn solo.