Heh. I ran out of bolts halfway GMS compound mission and had to trek back to base. Annoying.
Well. Here is my view on crossbows so far:
+ Great damage against organic opponents.
+ Special bolts are fun.
+ Great synergy with traps.
- Crappy damage against heavily armored opponents. You may need a sidekick weapon but then, you find out, you need to invest in another discipline, like guns.
- Other weapon loadouts pay off earlier in the game, like SMG/Sniper combo. With crossbows you have to invest a lot and be patient.
- Special bolts make you invest a lot in several scientific paths, maybe spreading your points too thin.
- Snipe ability is way better with sniper rifles than with crossbows (at least early game).
- Only two attacks per round that may become nerfed as soon as you try to position yourself in combat.
- Fastest degradation rate of all weapons ?
- Attack percentage pretty variable at similar distances. Maybe it's just me. But other weapons seem more reliable when compared to same PER 10.
- I have also found crossbows to be terrible when moving around in combat and/or disengaging from a close quarters opponent.
Overall, I am not very impressed with crossbows so far. I will keep playing to see how they evolve over time, but I have the suspicion that crossbows cannot be the main weapon and may need of some sidekick aid.