Stage 25 Edit
Stage 25 is another made up checkpoint. It has 3 stages. (This is getting boring to be honest.)
Stage 1 Edit
Stage 1 seems kinda morbid and bloody. That's all it is. The music is from the first part of the second stage of Checkpoint 6.
Stage 2 Edit
Stage 2 also tends to have some blood. The screen gets redder every passing second. This stage gets very difficult.
Stage 3 Edit
This stage has a boss. The screen is outlined with blood and gets redder with every attack. When the boss takes enough damage and gets completely destroyed there's a red flash. There is yet another mid-stage turning from blood red to cyan symbolizing the end of the doom stage which leads to Checkpoint 26.