I am not played a lot, but some random observations:
1) Wrench/multitool alt-fire-stun a terrible effective, just a ultimate sniper-AOE to stay unhit against 90% enemies...
2) Some force fields hurts some not... (I think I am mistake, and FF totally safe)
3) I can't reach roach and palm at cells under FF ); But the hand looks friendly!
4) Guys pretend what see no dynamite spawning from nowhere... I thought they just like fireworks!!!
5) I mentioned about wrench really best sniper weapon?
6) Small difference between breakable and drag-able crates.
7) I am kill-control every corpse just in case... I am absolute not ass-bitten at first 5min of game...
8) And yes, I am feel warrior more as easy than normal difficulty. (If won't striking into too spread crowd with wrench return-cooldown)
9) 8 secrets at first level it's just wonderful and terrible at same time... (I found only 2 for now, but I have troubles with motion sickness for last couple of days and secret-hunting beat me too hard)
10) Level larger than I was expected. First level remembers me more Quake2 and Unreal1 than HL1 about I wrote earlier.
upd>>>
11) Shield + wrench = cheat
12) Doors not only open by shoot but close too, You can play this game with mobs
13) At max difficulty sometimes still alive mobs drop weapon when stumbles then I loot it and mob still can shoot to me (It's bug or feature?) I got thee from one...
14) I can't loot dinosaurs food guards just before level exit :'(
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Most of indie FPS I was played for last 2-4 years just too FPS(without notable portion of random funny things, it's too boring for me last decades) or GZDoom mods sometimes funny but too doomy (2.5D and limited interaction). It's funny when You drop a some games because they too long, and replay other many times because they too short but enjoyable...
P.S.: Be cool if full game have map/chapter selection like LAB, I think it's very useful feature for almost-every FPS longer than two hours and especially when replaying... (As an example some levels of LAB, ProjectWarlock1, HL2 etc. I replayed a lot more than all others in sum)
Wrench sniping (point not a crosshair but his last projectile, even shotgun shells easy to evade from this distance):