The demo of Pragmata has 8 drawings you can get in the end.
No.1

Only use Diana's hacking damage ability to kill all the enemies.
- Using any gun will fail this.
- The first two gun shots at the beginning doesn't count.
No.2

Trigger the secret fight with the red robots in the elevator.
- So I tried what Lokknar said in the comments right under this post and looks like he's right and the guide I had here before this edit was wrong.
- To trigger the secret fight you need to finish each of three robots (two walker and one drone) with a different weapon.
- Finish one with Pistol, one with Diana's hack ability and the other one with the green gun (trap gun).
No.3

Open all boxes and chests and loot everything from them and from enemy robots.
- There is hidden boxes and hidden places with boxes so don't rush and look around.
No.4

Finish the game without getting hit.
- To be honest here I don't know if this only counts on the boss fight or the whole enemies.
No.5

Speedrun the demo under 10 minutes.
No.6

Stun two enemies with Statis Net (green gun) and kill them.
- I don't know if killing them is needed for this, but they are in stun for a long time so you won't have any problem killing them.
No.7

Open and loot all the orange and blue box and chests.
No.8

TBA
No.2 is for different killings of all 3 bot's (drone + 2 walkers) at the elevator.
Pistol, Diana's hacking, Green gun (not sure for Red gun), then will spawn 2 walkers and 2 orange bot's.