UPDATE: I have made the changes to the main game now. You do not have to start a new game to continue playing, but you may want to try it out, as the first level is different.
I have uploaded some rather large changes to the "Testing" branch of Paradox Vector.
Since there is a lot of new content, it has not been tested as thoroughly as I'd like, so I will probably be updating this list before it goes to the default branch.
Updated First Level
The first level of the game has a new layout. It's not vastly different, but there are a few things that make it a bit more interesting. I plan to do this with all the levels, eventually making them longer and more complex.
New Enemies
Urchins are strange, jumping creatures that can be found outdoors. I am finding them quite difficult to hit right now, but I will work on that. Maybe they need to jump less, or move slower, or both...

Slower Spiders
The spiders in the normal (not hard mode) version of the game have been made a bit slower and easier to hit. There are also some new spider hiding places on most of the maps, as well as in the outdoor areas.
Fixed Alert Messages
There was an issue with some of the alert messages, if you reached one while another was already active. This should fix the issue. For instance, if you collected a health triangle, and then reached an old one statue, the lore would disappear when the health triangle message would have. Now the game can distinguish between the times messages for pick ups, and the other messages that should stay on screen while you remain in proximity of the game object responsible.
Updated Checkpoints
I made a script that will make it easier to add items and creatures to the checkpoint save system. Soon I will be including things like weapons, ammo, exploded walls etc... Right now, pressing F5 will set a checkpoint (with a new alert message) and F6 will load that checkpoint. Enemies that you have defeated prior to setting the checkpoint should not reappear after loading it, with the exception of urchins, which are not quite finished yet.
I expect there will be a few bugs in this version that I did not have time to discover yet. I plan on continuing with this version a bit longer before it's ready, but I thought it would be good to upload my current progress as is.
