So I just finished the game on "Subjugator" difficulty and thought I'll share some stuff where I think this game could still improve. Not really much I have to list. For $5 this is absolutely well done stuff. Ok so here we go:
1. Boss health bars - I wish the boss health bars had a bit more visual style to it and would also include the boss names so I would know the names of them. So far I only know the name of the second boss because it was mentioned at the end of E2M3.
2. Boss fights - Imo some of the boss fights where a bit too easy. The third boss for example was not able to hurt me once on "Subjugator". Would be nice if some of the bosses (2nd, 3rd, final) had more attacks they could use against Zortch. Also after beating a boss it would be nice if the level transition wasn't automatic and you still had time to check the area for ammo etc. before moving on to the next episode (like you where able to do it after the E4 boss fight).
3. Reload cancel - It would be really nice if you where able to shoot your weapon or switch to another one during reloading. Right now you'll have to wait for the reload animation to be completely done before you can attack enemies again.
4. Pistol alt fire - Imo the alt fire shield should break after some time when being hit by many enemy projectiles so you can't just hide behind it forever and kinda cheat your way through the game.
5. Health and Armor - I think on higher difficulties the amount of health and armor pickups should be lower to increase the challenge. There was always so much stuff around the next corner that I never really felt like I was in danger.
6. Audio - I think the audio in general could need a bit more punch to it. Everything felt a bit muffled imo (especially things exploding). Enemies could need more noticeable sounds for teleporting around or when landing after jumping around. I got "jumpscared" a few times from an enemy landing behind me without making a sound and then attacking me.
7. OST - I think it wouldn't hurt if this OST had a few more tracks that would be a bit more fitting for bigger action parts in the game (e.g. the big arena fight in E4M1). Also every boss should have it's own unique music imo.
8. Berzerk powerup - I had a hard time using this powerup due to the screen going completely red. Looking at a fully red screen did actually hurt my eyes a bit. Maybe a different color or effect could be found for it.
9. Story text - It would be cool if the game had some little story text at the end of each episode (same style you did it at the end after defeating the final boss) that would show how you got from one area to the other. For example E2M1 starts you inside a little boat. But how did you get there from the boss room?
10. End screens - Imo the end screen of each level should also display the amount of enemies defeated in the level.
11. FOV slider/mouse sensitivity - For some reason you can't manually type in the value you want to use for your FOV or mouse sensitivity. The FOV slider for example goes up from 70 to 75 and then to 80. If I would like to have my FOV on 78 then I could only get it done by editing the settings.conf file but not by moving the FOV slider in the options menu. Same for the mouse sensitivity slider. It would be cool if you could just double click on the number next to the slider and type in the value you want to use and/or have the slider move in +1/-1 steps.
I've not encountered any crashes, softlocks or places where I would fall through a map at all. The only time I got stuck was when an enemy pushed me against some stairs and I was suddenly trapped inside those. I don't remember the exact level anymore. Could have been in one of the E3 levels. Also I found out that when you have the flashlight active on the end screen of a boss fight you could still move it around with your mouse.
That's all I can think of for the moment. This game is really a hidden gem and imo underpriced. I've played games that ain't as good as this one but would cost at least $15โ20. You should also put this game on GOG and ZOOM-Platform imo. More people need to experience what it's like to be scammed by Alien Brainsuckers.