Arena is the best mode, change my mind.

to make sun rise.

Congratulations! You decided to play a ganker, the most difficult thing to do in Arena. You're naturally squishy, generally have to get in the thick of it, and die immediately doing so. Enjoy getting one shotted the longer the game goes on, since the Arena map is not made for this entire class of gods (with a few exceptions, i.e. Loki, Thanatos, Fenrir). Depending on your game, you'll be forced to buy items you don't necessarily want to buy. But it's better you stay alive longer in a fight, unless you want to die more times than the idiot(s) who fast picked a god or useless class like you did. Reminder metas are lame and for the squares that aren't tolerant to accept anything other than the meta. This is Arena, and a HiRez game at that. Do what you want.

Because you weren't squishy enough.

So my "Final Build" wasn't good enough and you didn't listen to how easy you are to kill. Fine, be that way. There are situational items in here; as always, adapt to what's going on. Don't buy heavily into penetrating items if the enemy team is the classic "all backline" line up. Shreking the enemy team? Having tunnel vision and only maybe killing one enemy before you inevitably get one-shotted? Here are some cool items to help increase your death counter.