a "brief" overview of how Engineer's playstyles and arsenal have evolved since TF2's release
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support the channel -   / lister  
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all songs used (with timestamps) - https://pastebin.com/FbZ8EVsT
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0:00 intro
2:27 2007-2009
18:03 2010
47:43 2011-2012
1:11:34 2013-2015
1:49:01 2016-today