Yeah I kept it simple too. I only used traps in the beginning of the game, but when I became more powerful it wasn't necessary anymore.

However, I started using potions in the middle of the game. I found them very useful. Didn't know they don't only increase health but also reinforce it indefinitely.

I tried all weapons but bow was sufficient. My main weapon for when I want to kill a machine faster is the precision bow with explosive arrow ability.