They aren't DLC, you just have to unlock them. Silverback is unlocked by getting level 7 barriers. Sentries are unlocked by getting level 3 or 4 Decoys.
You can get rid of the delay if you go to your Control Panel / hardware and settings and choose Pen and Touch. Then disable "press and hold for right clicking".
Yeah, will definitely get some decals in there bugo. Thanks for the suggestion. Thanks for the suggestions arrangemonk, will throw in some makeshift repairs to sort out those broken windows.
3D painting currently works with mask-type layers or color paint layers. Decal stamping is not included yet, but is definitely planned on our list of upcoming features.
Ah, the image above is actually in engine!! Not a paintover! Anyways, still cracking on this. Working on the decals now as well as a couple of other issues with lighting, the skirts for objects, etc.
Close to the end for this project. The only major things left are all decals maps, wiring and I have to get the camera depth fade to work with the light shafts.