''GLORIOUS FORTRESS'' 100% (Demon) by JamAttack [3 Coins] | Geometry Dash 

Song: Glorious Morning by Waterflame
• Glorious Morning
Waterflame: / @waterflamemusic
Glorious Fortress is one of those levels where you can just see the amount of time and effort that was put into it, without a moment wasted, just by the amount of attention to detail and the way its theme is executed.
Being just under 2 minutes you get to go through and explore exactly what its title suggests, while having a nice sense of build up and progression. You get to see the inside and outside of the fortress and even soaring through the skies.
There's a lot of variety here that still adheres to its theme, which is difficult to do without it getting dull towards the end, but overall Glorious Fortress escapes this due to its upbeat art, flashy effects and vibrant colors, you can definitely see the 500 hours of work that was put into this level.