Exploding stuff in xen makes too much damage?

Maybe I dont understand something about Xen, but im pretty sure these tings make too much exploding damage. I used to shoot them all the time but now?..

Map bm_c4a1b1

https://www.youtube.com/watch?v=3LUr1Czbx58&feature=youtu.be

Ok forget it, its a game play mechanics, like in original half life with bunch of trip mines

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