if ur stock on subway shoot the chair till it reach the platform using shotgun (shotgun only works on this) the hardest part of this is when u encounter the train u need to be careful cuz sometimes it will stuck on something, u can still get bullets to the check point btw just use the train on the tunnel u can climb on it and walk to the platform and get bullets again, if u wan to know more details I will upload a yt video(or maybe not depends on how busy I am) just wait
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