You need to do the

INSTALLATION:
1:download this zip: http://www.mediafire.com/file/6abpodzv0bnu2vp/Bloons_TD_5_Enhanced.zip

2:put everything form the zip file straight in to the Bloons TD 5 foulder ("\steamapps\common\BloonsTD5" in my case: "C:\Program Files (x86)\Steam\steamapps\common\BloonsTD5")were there is the "BTD5-Win.exe"

3:Profit

MANUAL INSTALATION:

1:Google on youtube: ReShade 3.0.8 Tutorial

2:Install ReShade 3.0.8 on the BTD5-Win.exe and use the OpenGL installation("\steamapps\common\BloonsTD5\BTD5-Win.exe" in my case: "C:\Program Files (x86)\Steam\steamapps\common\BloonsTD5\BTD5-Win.exe")

3:Here is your ini: http://www.mediafire.com/file/sxqcbue00pqpb2u/Bloons_TD_5.ini
USE IT!!!