DOOM

There is a computer in the "Lazarus Labs" level that when interacted with will play a Doom style version of Bejeweled. It can be found in the room with the DOOM Guys crypt on the left side .

The Dopefish can be found as the logo on boxes of ramen noodles from "Dopechan Noodles" found in various areas.

Progress in the single player campaign until you reach the final Boss. Quit and replay the missions to get the collectables.

At the start the game in the Prologue where you wake up and leave the area he was kept in, look at the bottom of the security door. You can see that a Mixom Manufacturing sticker has partially slid down, revealing that it was covering a Vault-Tec logo.

During the "Titan's Realm" mission, you will encounter an area where you can see a large number of enemies and a yellow booster platform at the back. Walk the stairs to your right and follow the wall along the second floor to the end. There is a hidden room is behind a crack in the wall that you can jump up to reach. Although it looks like it is too small to get through, you can enter the wall .

Search near where you first met the Baron of Hell in the Kadingir Sanctum to find a cave with a hidden lever and a skeleton. Notice that the skeleton is wearing a Dovahkiin horned helmet and was shot in the knee with an arrow .

During the "A Brighter Tomorrow" mission, get near the location where you find the challenge mission artifact. Search behind fallen debris in this area to find a Super Turbo Turkey Puncher 3 arcade machine. You can hear its retro arcade sounds when you get close to it .

Jump into lava in the "Foundry" level to sink to your death while giving the thumbs up .

Complete the following tasks to unlock PlayStation trophy rewards.

Thy Flesh Consumed (Platinum): Earn all Trophies.

E1M1 (Bronze): Complete the first mission of the campaign.

Knee-Deep in the Dead (Gold): Complete the campaign on 'I'm Too Young to Die', 'Hurt Me Plenty', 'Ultra Violence', or 'Nightmare'..

A Toe into Madness (Bronze): Complete The UAC on Ultra-Nightmare.

Up Close and Personal (Silver): Kill 50 enemies using the Chainsaw.

Specialist (Bronze): Earn the Mastery for a weapon mod.

IDKFA (Gold): Earn the Masteries for all weapon mods.

Hot Swapper (Silver): Acquire all weapon mods.

Historian (Bronze): Find all Data Logs.

Timing is Everything (Bronze): Use explosive barrels to kill 100 enemies.

Every Nook and Cranny (Silver): Find all Collectibles. (Video)

Argent Overload (Bronze): Fully upgrade Health, Armor, or Ammo capacity.

Argent Fiend (Silver): Fully upgrade Health, Armor, and Ammo capacity on a single campaign run..

A Gift from Beyond (Bronze): Earn a Rune.

The Circle is Complete (Silver): Earn all Runes. (Video)

Tinkering (Silver): Fully upgrade a Praetor Suit category..

Overclocked (Gold): Fully upgrade all Praetor Suit categories on a single campaign run..

Thorough Shopper (Silver): Complete all Challenges for a single mission..

Butcher (Bronze): Perform 200 Glory Kills.

Rip and Tear (Silver): Glory Kill all common enemy types in the campaign..

Juicin' it up (Silver): Kill 150 enemies while using Power Ups.

Momentum Shift (Bronze): Upgrade a Rune.

IDDQD (Gold): Upgrade all Runes.

What Else Ya Got? (Gold): Complete all Mission Challenges.

IPXSETUP.EXE (Bronze): Win a Multiplayer match.

Combat tested, Doomguy approved (Bronze): Reach Level 5 in Multiplayer.

Shareware (Bronze): Create and publish a SnapMap.

No Rest for the Living (Bronze): Play 5 published SnapMaps.

Entryway (Bronze): Complete the SnapMap Basic and Advanced Tutorials.

Additionally there are five secret trophies..

Shoot it Until it Dies (Silver): Defeat the Cyberdemon. (Video)

Outnumbered? No Problem (Silver): Defeat the Hell Guards. (Video)

Who's Next? (Silver): Defeat the Spider Mastermind. (Video)

Into the Unknown (Bronze): Warp to Hell.

An Old Friend (Bronze): Acquire the BFG.