Thanks for playing :)
Yeah from feedback and what i saw on vods from streams i missed, i totally agree that i goofed up imensely in terms of conveying the mechanics and not having a confusing level design, trying to not do that but somehow it persists :/
That colliding rule is something i've been doing a lot as i feel in most cases it seems logic not to take damage when an enemy isn't actively attacking, (now considering the really poor difficulty balance on my part here it's okay if you didn't finish it) there is only one exception to this rule and that's the boss, which has a ramming dash attack that does deal damage when you collide with him directly.
Like said above, entirely on me and poor difficulty balance. I tend to aim for normal/easy ish difficulty but somehow end up with something very difficult cause i haven't playtested enough, even if here i did the effort of playtesting a bit more than i did usually, also totally valid point about the gun enemies, but believe it or not, they used to shoot a lot faster at some point in developement XD
Glad you liked it despite all the issues still ^^