So I’ve been playing Black Mesa and I remembered one thing.
Suit’s armor functionality is different in HL1 and HL2.
In HL1 if you have at least 1 armor point, the suit will reduce all incoming damage by 33% and then the armor will absorb about 66% of this reduced damage (for example if you’re at 100/100 and take 100 damage then the suit will first reduce it to 60 then absorb 40 pts of it, so you’ll be left at 80/60). So a player with full health and armor effectively has 300 health.
In HL2 the damage reducing has been removed and in compensation the armor now absorbs 80% of all incoming damage. So having full health and armor means you have 200 health.
This is a significant difference you can sustain 100 more damage pts.
Doing a quick test in Black Mesa revealed that developers did not bother to carry over HL1 armor features and just leaved HL2 fuctionality. So, if this is an oversight, it would be nice if developers reimplemented HL1 armor functionality.