Streets of Rage 4 (SOR4) has many different trophies and achievements that you can unlock, one of which is Throwback. Throwback is a trophy achievement that requires you to find a retro level
If you manage to unlock this you will obtain a Bronze trophy and/or 15 Achievement points
So as we mentioned earlier in order to unlock this one you are going to need to find one of the retro levels, now there are quite a few of these hidden among various different stages.
However, the earliest that you can find and unlock this trophy achievement is during Stage 2 – Police Precinct.
For the time being just continue the game as normal. However when you reach a certain section during this mission, (the area where you will see several people locked in cells and a man named Barney) this is where you will want to stop. It is in this section that you can unlock the trophy achievement.
After dealing with the enemies in this section, you should hopefully now see some rooms above (all of which have yellow doors but only one of them should be unlocked)
In this rather small room, you will want to punch or simply attack the little arcade machine here. You will now be taken to a stage from Streets of Rage, you will also need to defeat an enemy here too.
The trophy achievement should now pop! It is quite an easy and simple one to get, which doesn’t really require much effort or work in order to pull off.
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