Lil Gator Game

The easiest way to get this achievement is to play through the game like normal, completing all the quests you can find, and not worrying too much about missing anything.

Once you complete the main story and watch the credits, you'll find Jill in front of the large cathedral-ish building in the playground with a new quest marker. Talk to her, and she will give you two items: a megaphone that you can use to find friends with open quests, and a cell phone you can use to call her and ask where the nearest breakable object is.

Equip the megaphone and use it to locate friends you've missed. When you use it, a word bubble will appear on the screen indicating which direction the closest missed friend is in. Find them all and complete their quests, and Jill will contact you again to tell you when everyone has been found.

I left this one until near the end, after completing the main quests and upgrading the play area (you need 35 friends to have got this far). Once you do all play area upgrades you can go and speak to Avery at the Juice Bar in the upgraded playground area and they'll give you a Megaphone. Equip it to your LB or RB button and you can use it to get a marker on screen where the nearest friend is that you haven't discovered yet. Keep going to the marker, collect the friends and use LB/RB again for next marker to show etc - eventually you will get a text to say you've got them all and achievement pops.

This guide will help walk you through all of the achievements in around 3-4 hours, timestamps are below the video


ACHIEVEMENTS TIMESTAMPS
12:50 – 1st Bracelet (Part 1 of Infinite Power Achievement)
25:21 – Change of Plan Achievement
33:21 – Enrichment Through Invention Achievement (Jill’s Quest)
49:50 – 2nd Bracelet (Part 2 of Infinite Power Achievement)
58:37 – 3rd Bracelet (Part 3 of Infinite Power Achievement)
1:00:35 – Growing With Water Achievement (Martin’s Quest)
1:28:00 – 4th Bracelet (Part 4 of Infinite Power Achievement)
1:30:11 – Lunch by Compromise Achievement (Avery’s Quest)
2:04:00 – Lesson Learned Achievement
2:16:18 – Name Reveal Achievement
2:17:45 – ACTUAL Name Reveal Achievement
2:18:19 – THIS is the Real Name Achievement
2:19:04 – BELIEVE ME, THIS IS THE REAL NAME Achievement
2:19:43 – EMBRACE THE UNKNOWN Achievement
2:20:10 – Interrupt This Broadcast Achievement
2:20:30 – Ascend Achievement
2:21:46 – Oof! Achievement
2:22:22 – Start of Hero of the People Achievement
2:23:34 – Under New Management Achievement
2:26:37 – Spider-Gator Achievement
2:27:30 – Hero of the People Achievement (continued)
2:30:00 – Craftslayer Achievement
2:32:47 – Demon of DIY Achievement
2:33:40 – Gatorangelo Achievement
2:34:06 – Lizard in Space Achievement
2:34:35 – Hidden Scale Clan Achievement