It's Act IV, we're all tired and our brains are mush. What better way to brighten up the day than with a nice chill wordsearch and easy quick clues?
Solving a few of the aforementioned quick clues reveals that the answer words or phrases all contain the string "LIGHT". The residues of the answers is what is enumerated, and the clues are all ordered in alphabetical order by those residues. The full answer list is:
The residues can now be located on the wordsearch. Note, however, a few differences from standard wordsearches:
This means there is only one unique way of filling in the wordsearch, as shown below:
If we remove the underlying grid and look only at the marks we've made:
These marks look rather like the word EVEREADY, if written in block letters, was lit from the top left and had cast shadows. The big sun in the top left of the image as well as the shadowy font used in the wordsearch confirms that we should consider some sort of top-left lighting and shadows. Furthermore, Eveready is a brand of battery, so that fits in with the light theme of this puzzle.
The puzzle that was originally meant for the solution EVEREADY was not ready by the start of the Hunt, so I decided to scrap it and replace it with a backup puzzle. This necessarily meant that Mr Brightside was easier than expected for an Act IV puzzle, although that was probably a relief for many teams.
The first time I saw letters clued in this visual way was when I was researching past puzzle hunts; it was used in a 2014 MUMS Puzzle Hunt puzzle. In that puzzle, the visual trick was an 'optical illusion'. I thought this was a neat mechanism that deserves to see the light (haha) of day again, although obviously in the context of a completely different puzzle concept. 2014 was sufficiently long ago that hopefully the majority of 2019 solvers did not recall it. For those who did, hopefully it was a nice bit of nostalgia for you!
In order to get the visual extraction, it was critical to use lines to mark words in the wordsearch rather than bubbles or highlighting. The fact that this wordsearch is so fundamentally different from normal wordsearches should be a hint to try something new. Apologies to the teams that were stuck at this step; I made sure to hint for it in the Hints, so hopefully that helped.