Awesome tutorial and attachments system!
It was hard to properly plan the shield usage as you can't predict the next attack. The strategy I used was to face the wall with the shield on my back, and only use it for lasers, while hoping to be able to also turn chain-chomps into the saw, and eventually just walk around to collect and launch all the fallen saws.
But what to do in the second phase, where there are so many dangerous things around? Health is decreasing almost instantly, and there is barely enough time to turn into the right angle and not enough time to recharge the shield :<
I can totally see these mechanics of different parts placed on different spots could easily take a lot of time to be implemented, though, and that was quite a unique experience!