I actually got to spend more time on tower defence game today. Things I got done

1. In game UI - cash, enemies remaining and player base healthbar
2. Cash system, paying for towers, bonus cash on completing level and killing enemies
3. Waves of enemies (very rudimentary)
4. Main menu and options menu, and changing from game to menu scenes
5. Animations on completing a level, or having base destroyed

It is all coming together now for the most basic version.

Main things I still have to add

1. Different enemies, wave variations
2. Different towers
3. Upgrading and repairing towers
4. Sound

But the basic version is almost completely playable now, I just have a small bug where it doesn't preserve cash between levels.

The healthbars are also showing through a couple of the animations but I'll just hang them off an empty node tomorrow and cull them.

I am quite pleased with what I have achieved in a week of part timing, with most of that spent watching tutorials and learning. Much I learned / copied from the brackeys tutorials in terms of basics of using Unity (https://www.youtube.com/user/Brackeys/videos), including some of the user interface stuff today.

I can't wait to get some funky cameras going and perhaps doing some videos.