Yes there is! I have gotten permission to share concept art with you guys! These are all really old and made by the artists working on the project at the time. I was the only artist who only did 2D but we all did concepts. These are quite embarrassing for me to look back at and admit to be the creator of, but they bring up fond memories so I am happy to share them with you(note: I only have access to a small amount of our concepts, but perhaps others will be able to fill in later ) :
Starting with Super Earth
The thumbnails and final concept for the Helldivers base ship. Pilen told me one morning that we needed a concept for the base ship. He wanted to replace the one that was shown in the teaser trailer with something more detailed and closer to the other Helldiver objects. We also needed it for the intro which I was working on at the time so he asked if I could do it, and I happily took on the challange.
Civilian houses and industrial buildings. I remember that this was a very unexplored area for the game at the time. We had no idea what Super Earth looked like on a ground level at the time, so I got the chance to come up with a few ideas. All of these early sketches were later replaced with a more realistic design.
Helldiver armor customizations. We did not know how many we wanted to do or what they were going to be called, so I had very little to go on for these. I ended up looking through what other games were doing and after some referencing and thinking, tried to push out as many as I could think of, with a megaman and samurai extra which I knew was never gonna pass, but were just for my own fun
Volcanic Planet. We got notified during a morning meeting that we needed concepts for our next planet type for an upcoming DLC, so we took a day to sit down and do some environment concepts. The next day we met to show and talk about what we had done, and this was my small contribution to that.
And now to the more exciting enemy bosses!
Cyborg boss. These came about quite the same way as the volcanic planet. We had found out that we were gonna do bosses for the factions for a DLC(Yay so cool and fun! I love bosses!). We spent a day or two for each boss and then threw them in the review pit where we all sat and talked about them together.
My contribution was some kind of amalgamation of Starscream from Transformers and a Warhammer Dreadnought.
Very cool idea from one of our other artists
Bug boss. This one was especially fun since I’m such a big fan of bugs and had a tarantula and scorpion at home hehe. My contribution was inspired by that.
Our other artists did a cool antlion queen and lobster king concept.
And lastly was the illusive Illuminate boss with power and technology beyond our understanding.
In my contribution I was experimenting with how much the organics versus the technology was in power for the final boss.
More cool stuff from other artists!(I hope we can get them to fill in what they were thinking)
That was all that I could get a hold of for now!