Gunman Guru Trophy in Blacklight: Retribution
Kill 50 enemies with the Gunman Hardsuit's Auto-Cannon
How to unlock Gunman Guru
Go: Customization => Depot => Press on any tab, then scroll down to the Gunman Hardsuit and add it to your loadout. You can either rent the Gunman Hardsuit for 1 day for 1,250 GP/100 Z Coins or buy it outright for 40,000 GP/1,000 Z Coins. Now find a match in a mode of your choosing and earn 975 CP so you can buy the Gunman Hardsuit summoning device but make sure you summon it somewhere quiet to decrease the chances of you being killed and someone else stealing it. The Gunman Hardsuit is physically much weaker than the Rhino Hardsuit but its weapons more than make up for that deficiency so go nuts with the Auto-Cannon () and shoot all the enemies you can find. If you're skilled enough, it shouldn't take more than 2-3 matches to get this trophy.
If you want to speed this up, then you can boost it in a Private Match by using the following settings:
Invite Only Match: Enabled
Use Custom Playlist: Disabled
Maximum Bots: 0
Time Limit: 30mins
Goal Score Multiplier: 1.0
Health Multiplier: 1.0
CP Multiplier: 3.0
Starting CP: 3,000
CP Cap: 3,000
Edit Mutators Leave everything as-is
To invite your friend, go: => Friends => Press on your Friend => Invite to Game. Depending on how many kills you get, it might take a couple of matches before the trophy pops.
According to Ztorm, this might be possible in a Private Match against bots but I cannot confirm this:
1 - Buy the Gunman suit from the customisation section
2 - Create any private game style with bots and after killing 50, finish the game and the trophy is yours. If you leave, the kills won't count.