Lockdown

Jake, a young teenage boy has to defend his house. his brother, and himself from Jiggs, a tentacled ghost-monster. Who will win?

EDIT 26.07.2019:
I've just written a complete puzzle guide for the game, but only use it if your REALLY stuck else you'll ruin the fun :)
Full Walkthrough/Puzzle Guide:

https://www.mediafire.com/file/d0b0vkm6owe8wbp/Lockdown_Walkthrough.txt/file

EDIT 30.07.2019:
I actually can't believe this... Thank you Tom, and you all so much for getting this to the frontpage <3