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Sonic Generations

Sonic Generations

2,4281,00049
Sonic Generations
Halfway Point

Clear half the Challenge Acts.

Halfway Point+0.2
1 guideOffline Game Mode - These achievements require play in game modes that do not necessitate a connection to any online services.Single Player - These achievements can be obtained by a single player.
jospantherjospanther96,193
06 Nov 2011
6 0 0
As you probably know, challenges are those golden gates around the "White Space" with the purple portals. You will have to complete 45 of these in order to get this achievement.

It is important to note that you do not have to get an "S" rank. Your ranks can be all mixed, you just can't fail the challenge.