Arcade Paradise

Shortly into the story you will unlock the ability to complete "To-Do" tasks. You get 3 per day and each has a varying amount of Pounds (£) you can use to purchase upgrades on the office PC. To-Do list items will vary between collecting money, doing laundry, getting specific scores in games, and there's even one to just walk down the street. You can grind this out semi-quickly by completing the tasks asked and ending the day early, or if the tasks are undesirable you can quit out of the game and restart the day to get a different set.

Note: I highly recommended to go for the Space and Time upgrade early on, as it gives you significantly more time on each daily rotation to complete tasks and finish games. The effect of each upgrade is noted in highlighted text within each description.

Purchasing the glasses and shoes are required to unlock:
This currency is also required to purchase all of the Jukebox songs you'll need for:


The alternative method below is an exploit/bug that appears to have been patched out as of Sept 2022. I'll leave it here as a history/archive. Another posted solution eludes to this but doesn't explain clearly.

You'll have a chance each day to get a task to play a random three different games in your arcade. All you need to do is walk up to the game, start, and then hold Y to exit and you'll get credit. Once you've done all three you'll see the popup "To-Do Task completed" in the top right corner. From here you can continue to start and exit the third game as long as you like and receive the money each time. I was able to get several thousand pounds within around 15 minutes. Note: from my experience the money will only count if you wait until the pop-up disappears each time.

Example for maximum clarification:
1 - To-Do List item says play Racer Chaser, Blockchain, and Attack Vector.
2 - Start Racer chaser, exit.
3 - Start Blockchain, exit.
4 - Start Attack Vector, exit. To-Do List completion message, money received.
5 - Repeat step 4 as much as you like until the shop closes.
6 - Buy every upgrade and song without having to spending a significant portion of your life grinding out this achievement.