Roboquest

After competing each level/region in Endless mode, the game will either give you a singularity or glitch. These are modifiers they accumulate to make the game harder as you go on in Endless mode.

They seem to approximately alternate between which it gives you, so one level you may get a glitch, another a singularity, then the next another glitch. Believe it's possible to get two glitches in a row but unsure.

I unlocked this upon beating stage 12 or 13, but you need to go around this far anyway for the other achievement related to getting to character level 26 in Endless.

After competing each level/region in Endless mode, the game will either give you a singularity or glitch. These are modifiers they accumulate to make the game harder as you go on in Endless mode.

They seem to approximately alternate between which it gives you, so one level you may get a glitch, another a singularity, then the next another glitch. Believe it's possible to get two glitches in a row but unsure.

I unlocked this upon beating stage 12 or 13, but you need to go around this far anyway for the other achievement related to getting to character level 26 in Endless.