Posters:
These were two posters/illustrations for the Environment and Props section of the Artbook. They became scrapped because the packaging master just... complained about 'em being so blurry and I couldn't redo it because it was requested for the same day 6 illustrations... which recently the same day I was ordered in popular poll to cancel and stop doing these illustrations, instead helping the others with programming (also because personally I did it FAST and it's not the style they saw I use so...).
Anyway, the left poster is the upper floor of the game, which mission is petrify a bat, making it fall into a press button which will open the door to the hall. The key is used to unlock the monument locker forward that room passing through the hall.
The right one is just a portrait of Athena Statue, which I had to model (soon you will see the models too).

Poseidon - Spartans (Concept Art)
As in the Artbook they won't be shown... I show it here, these are my concepts for Poseidon and the spartans of the game Medusa's Revenge (which is a school game project).
I am about science fiction and fantasy, so I planned 4 different designs for them. Poseidon as being the God of Seas, I thought into something epic (as being the final boss) but without quiting about his canonically clothing which is pretty simple, I went through so many examples of how people represents Poseidon in videogames so I took some references to create his look plus his outfits.
The Spartans as many people show em so different of how canon it looks like, I took some references and started to experiment with different helmets, armors and saddles. 
At the end (which I can't show cuz it was made by other team members) Poseidon only wearing the canon ancient greek outfit and a golden belt with a hair bun, meanwhile the Spartans also being like how canon they were looking like (without helmets) and more simple looking but of course, being faithful of how they were in that era.