When farming, time the activation of your Acid Hunters so that you fire it in between your autoattacks. That way, you farm as efficiently as possible and you can also push the lane very fast this way. If no enemies are nearby, begin farming a creep wave by hitting the back line of enemy minions with Noxian Corrosive ChargeNoxian Corrosive Charge and let the corrosion deal it's full damage to the minions while you destroy the close-attacking minions with your autoattacks and Acid Hunters.
A locked-on Acid Hunter has incredible range and can hit even if the target is not visible to you, being in brush, the fog of war and even in stealth.
Acid Hunter can hit through walls, giving an unexpected attack with a suprising amount of damage.
Acid Hunter has good range and hits unarmored targets hard even when not locked-on. Getting in the habit of using the skill shot occasionally, even when Noxian Corrosive ChargeNoxian Corrosive Charge isn't necessary applied, helps to throw enemies off of their rhythm and makes you a threat even when your lock-on fails or wears off.
As your slow is dependent on your shield's remaining active, consider putting ranks into Terror CapacitorTerror Capacitor to provide Urgot with a crippling slow, better chances of maintaining it and greater durability in skirmishes.
Urgot's skillset makes him most effective in eliminating the enemy team's carries, but don't overestimate his toughness. In general, it is a good idea to keep your distance from DPS champions until they have been weakened or separated.
Last Whisper is also a good late-game item if the enemy team is building armor to counter you.
Urgot can be mana-hungry in the early laning stage, but buying Tear of the Goddess should eliminate mana problems for the rest of the game. If you decide not to focus your build around picking up the Manamune early, other mana regeneration sources are recommended.
Guardian Angel can be an effective defensive item for Urgot as his Terror CapacitorTerror Capacitor can offer the additional time necessary for a last escape, or give you time for cooldowns to refresh so you can quickly focus down low health enemies who linger nearby.
Glacial Shroud is a effective mid game item for Urgot as its armor helps him fight physical damage champions, while the mana and cooldown reduction help him spam his Acid Hunter. Its upgrade, Frozen Heart, is effective for that same purpose late game.
Sheen is essential to any high-damage Urgot build. Since he spams acid-hunter missiles constantly in fights, he will proc the Sheen as often as possible
Urgot lacks mobility and is vulnerable to champions with good DPS, especially those with frequent disables or items such as Frozen Mallet.
Avoid commiting to a close quarters 1v1 battle with Urgot unless you are certain of an overwhelming victory. His abilities make it difficult to escape a losing battle.
Urgot tends to be rather predictable, in that whenever he lands a Noxian Corrosive ChargeNoxian Corrosive Charge, he will almost always chase the target in order to land his full combo. This can be easily exploited to bait him into overextending for a gank.
Keep in mind, however, that after Urgot reaches level 6, Hyper-Kinetic Position ReverserHyper-Kinetic Position Reverser can allow for an easy escape by switching places with the ganking champion. Either make sure the ganking champion has a way to block or break the suppress, or be prepared to interrupt the channel. If he is unable to use his ultimate to escape, Urgot is usually a relatively easy kill.