There's a bow in 1-2, the Compound Short Bow. It's on the top of the second tower, the one that has four crossbow soldiers at the bottom before you enter it.
Also, the Spider boss in 2-1 is more difficult to beat using bows than melee, at least in my opinion. I've never had any troubles with him, just use a fire resistant shield like the Purple Flame Shield, run towards him with your shield up, stay there until he drops down, hit him, and run towards the fog gate when he charges up his AoE flame attack. Repeat until he's down.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
Essay Pro