Before following the guide i should tell you that this method was found in a post made by 'SirGuySW' in the TrueSteamAchievements website that will tell you how to get the 'NEW_ACHIEVEMENT_NAME_0_4' achivement without just using "StEAm ACHieVEmEnT MaNaGEr".
Post: https://truesteamachievements.com/a802/newachievementname04-achievement
SirGuySW Steam Profile: https://steamhost.cn/steamcommunity_com/id/SirGuySW/


SirGuySW post show more information about all this and this guide is to show how to do it simple and easy. If you encounter any errors while doing this i recommend checking out his post.

You will need these to obtain the achivement:

• Visual Studio[visualstudio.microsoft.com] - Any version works.
  
• DirectX SDK from June 2010[go.microsoft.com]
  
• Steamworks SDK - Click on this link for more information.

Extract steamworks_sdk_153a.zip and open the file SteamworksExample.sln located in sdk\steamworksexample\ with Visual Studio. Right click on SteamworksExample and go to Properties -> Configuration Properties -> VC++ Directories and then edit these two:
Include Directories to "$(DXSDK_DIR)Include;$(IncludePath)"
Library Directories to "$(DXSDK_DIR)Lib\x86;$(LibraryPath)"

In visual studio open the files StatsAndAchievements.h and StatsAndAchievements.cpp.



Go to the file StatsAndAchievements.h and find the function enum EAchievements around lines 15-22 and add this 'NEW_ACHIEVEMENT_0_4 = 5,' to the end of the function.

Now go to the file StatsAndAchievements.cpp and find the function Achievement_t g_rgAchievements[] around lines 23-29 and add this '_ACH_ID( NEW_ACHIEVEMENT_0_4, "NEW_ACHIEVEMENT_0_4" ),' to the end of the function.

Still in StatsAndAchievements.cpp find the function void CStatsAndAchievements::EvaluateAchievement( Achievement_t &achievement ) around lines 207-242 and add this:
case NEW_ACHIEVEMENT_0_4:
UnlockAchievement(achievement);
break;
The logic of this code is that when you launch the game the achivement will unlock immediately.

Before getting the achivement make sure Steam is running. Next thing to do is to build the project by going to Visual Studio, right click on SteamworksExample and click Build. Once the build is finished, run the project by clicking the play button in the top middle.
Once the game opens, the achievement will unlock.