GMS Bera
Odium: Laboratory Behind Locked Door 2

This map works best with low latency and a good PC, otherwise the mobs may not 'spawn' consistently when you pass across the map.

Notes:
For reference, (these are optional), I have a -4 sec CDR hat and lv250 mercedes, 10% CD skip chance inner, spiked shoes.

The rotation is basically tap concussion, hold up, tap concussion, hold up. Once you get the timing, it becomes a nice, lazy rotation which doesn't require much attention at all.

The bottom right portal is just shy from a dash, so I generally take a step left in order to reach it.

I like to down jump-cast a few skills to keep the momentum going. To do this, you press down + jump + skill at the same time. Some keyboards or keyboard settings may prevent you from doing this smoothly. You can also pre-emptively press down (or down + arrow key) first, then press jump + skill.