great game, fun mechanic but my main problem is that i have so much trouble fighting spiders on there, i can never hit their back and it is usually a run killer for me, but i don't know if it's just me or other people also have a problem with them.

I have the same issue. Getting their hitbox is quite difficult sometimes, especially when the room is full of extra traps in your way.

Should be good now in version 2.0!