damage tank strat on wave 2 saves 0.7s on the next fastest thing i saw (in key route comsob), however it might be more like a second because i am not sure the key comsob strat is consistent
the last slash looks hard but the timing is actually pretty easy
i tried for a while to make this work without the tank but it wasn't working, maybe someone else can figure out something
Another iteration on this arena, I copied a lot of what nebula did in the 54:50 run Wave 3 may need some improv and last bell thrower can be annoying, otherwise this is pretty consistent
Also small detail I didn't notice until practicing is you can tell where the last enemy spawns in the middle by their position in the background
Not the perfect execution but here are some strats for the library arena starting with no silk :
The idea is to intentionally miss the last enemy with the spear on wave 1 or 2 to get enough silk to double spear on wave 3. The goal is to have at least every wave 3 enemy at 1 hp (2 spears for the needle one and 1 for the others). In the video, I somehow missed the first spear on the needle guy but the idea is here.
Moreover, on wave 1, I sometimes manage to hit both bugs with the 4th attack so I don't need the extra attack on the flying one. I also found wave 4 and 5 kind of cool, hope it can help. https://youtu.be/KlCbO8BWwjg
Best strats I could find for this arena so far. Not really sure if there's a consistent way to do the 3rd/4th waves, but this should be a good place to start.