Firewall

Overview
Firewall is a very difficult level by Hinds, well known to its flashing lights, and vivid colored decorations. This level is notoriously difficult for its infamous wave parts and its crucial timing. Because of this, it's usually considered a very hard demon. Although being a 2.0 level, it features a typical 1.9 gameplay, without moving objects, bossfights or robot segments.

Gameplay
The level starts with a simple but annoying cube with many triple spikes. The music, then, builds up and a faster and harder ball is introduced, which requires crucial timing. After that, appears a single speed transition cube￼ with some timing, orbs and spikes, but somewhat simple. Then it goes in mini double speed form, sign that the drop is upcoming. After a brief part and an auto one, the songs drops and the level builds up in difficulty. This portion of the level presents an huge amount of sequences and is in prevalently in double/triple speed, but the most notable parts are the waves (very tight spaces, triple speed, crucial timing, typical gameplay of Nine Circles Levels), the ships (massive straight flying) and the balls (massive crucial timing), while the cube parts are a lot easier. When the music slows down, the level become easier, with a final cube which resembles the final one of Breakthrough, in a gradually losing difficulty, but the player have to be careful to quintuple spikes in triple speed near the end.