Hmm. I think I'll avoid the value judgements in the first bit there.
The game really is not that complex if it is explained properly, at least judging by our experience at PAX and so on. The problem is we've been trying to see how little explanation we can get away with, since we know people hate reading. If you want volumes and volumes on how to play the game, I can obviously provide them (I think my verbosity is well established). I'm explicitly trying to avoid that, though.
Welcome! Here's a few tips to get you going in Bionic Dues.
When you first start out, you have the city map. You choose missions from here based on what rewards you want. After every mission, you can customize your exos with the loot you got from that mission. Easy peasy.
In each mission, you move around with WASD and shoot stuff by right-clicking it. These controls are shown at the bottom of the screen in the mission, so you don't have to memorize them. These controls can also be changed in the game settings. Every time you take a single action, each enemy that is awake also gets to take a single action.
While you're not acting, you can sit and think as long as you like. You can also pan the view with the arrow keys or middle-mouse button, and zoom with the mouse wheel.
Anything that is lit up is in your sight range and can be shot, weapon range permitting. You can see your weapon range by holding the shift key. Anything in your sight range can also shoot you, their weapon range permitting. There is a "sensor range" area outside of your direct sight range. Things in this area have a glowing wireframe appearance. You can see enemies here, but they may or may not be awake. You can whistle (an ability on the left sidebar) to wake them up and lead them into traps or ambushes.
Your goal in each mission varies, and can be seen on the left sidebar above your character's portrait. Similarly, on the left sidebar you can see your weapons and switch which one is active by clicking or using the 1-5 number keys. You can also see your exos, and switch which one is active by clicking or using the 6-9 number keys. Only one exo can be active at a time unless you are playing multiplayer.
If all four of your exos die in a mission, you lose that mission. Fail too many missions and you lose the game. Your overall goal is to last until the 50th day, then defeat the robot army that attacks you. Everything prior to that is preparation: strengthening yourself or weakening your enemies. You can see how many days remain until the final assault at the bottom of the city map.
The easiest way to get killed is to run at enemies. Hang back, use the Wait function (spacebar) to let them come to you, and then take them out before they reach you. Use corridors and other narrow places to face one enemy at a time. Look at the tooltips for each enemy and carefully decide which order to kill them in, or how to exploit their individual Bugs. Later you can use more advanced stuff like traps and stealth.
That's all the basics! Everything has a tooltip explanation, so the rest you can figure out as you go without too much trouble. Enjoy!