I've created a two-part 100% walkthrough video. It covers every single achievement in the game except the co-op ones and the speedruns, but the co-op are self-explanatory and the speedruns are super easy once you've played a level, since you can usually just run past everything and solve the puzzles most of the time. Contrary to some reports, you CAN get the gold points challenge on EVERY tomb on your first time through in solo play. Follow along with the video below as you play through the game (and part 1) to have your 1k in 8-10 hours tops. A detailed text guide follows after the time stamps for those that prefer it, copied over from the walkthrough I've written for this game.
This achievement is for completing all of the challenges on Tomb of Sobek. Just replay it for the speedrun. Don't stress yourself out trying to do the three bombs at once and feeding him a minion while speedrunning.
Timestamps:
0:07 - Tomb of the Lamplighter
13:55 - Tomb of Sobek
18:20 - Challenge Tomb #4
19:12 - Tomb of the Architect
29:44 - Tomb of the Torturer
43:11 - Pharoah
45:32 - Tomb of Set
51:29 - All Hub World Red Skulls
Tomb of SobekChallenges: Complete in under 3:00; Feed Sobek 3 timbebombs at once; Feed Sobek one of his minions
We are going to use this tomb to get all of the co-op achievements out of the way, as it is the shortest tomb. If possible, play through this your first time in 4-player co-op with four controllers for Couch party. This cannot be done online, so you’ll have to buy or borrow extra controllers if you don’t have four. Since you’re already doing Couch party, make sure you do not die with your main, and kill all three of the extra controllers at least once so that you get No worries I got this at the end. At the start of the tomb, have your buddy (or do it yourself with controller 2) put up their magic shield and place/detonate a bomb at their feet for Human cannonball. Then have them bomb themselves to death and revive them with
for Not on my watch.
The entrance to the Tomb of Sobek is on the right side of the entry area for the Pyramid of Osiris. He’s the large alligator boss. When the fight starts, just make sure all three extra controllers die and don’t revive them, and make sure you don’t die on your main. To defeat Sobek, use bombs to knock the time bombs into the center basket while holding
so they don’t detonate, then once a bomb is in the basket, shoot the eye switch above it. Sobek will jump up and eat it, damaging him and exposing his belly. Bomb his belly with your bomb, then rinse and repeat twice more to beat him.
While doing the initial phase of the fight, before the enemies show up, use your bombs to knock three time bombs up into the basket at once, making sure to hold
to slow their fuses. This takes quite a while waiting for bombs to show up, which is why you do it right away, while there are no adds to bother you. Once three are in the basket, shoot the eye above it to feed them to him and get the challenge done. After you do this the first time, grey alligator enemies will spawn. Put a bomb by one of these alligator enemies while it is standing up on a platform nearest the basket to launch it up into the basket, then shoot the eye to get Sobek to feed again and get this challenge done.
Kill a couple of his minions while doing this for Primus Inter Pares for getting the most kills in a tomb in co-op, and grab at least one gem for Oh we’re supposed to share these for getting the most gems in a tomb in co-op.
If you did this with the four controller method as advised, and ensure that the three extra controllers died while you remained alive the entire time on your main, you will unlock Couch party and No worries I got this as well. You’ll get Nothing a belly rub can’t fix for your first finish.