I played through the game on normal and found it decently challenging; will wait for release and try it on Hard - I love having to think through fights too and the way you can interact with the environment makes the game so diverse.  I've won many fights by carrying several barrels nearby ready to teleport or drag mobs back into a trap.  
I can't wait to play the full game! 
This and dropping them on mobs..I have to agree with the OP.